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All questions of March for NEET Exam
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: A wide range of contraceptive methods are available for family planning.Reason: Natural method includes condoms, diaphragms, etc., while barrier methods use of included method like periodic abstinence, lactational amenorrhea, etc- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: A wide range of contraceptive methods are available for family planning.
Reason: Natural method includes condoms, diaphragms, etc., while barrier methods use of included method like periodic abstinence, lactational amenorrhea, etc
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Malik Ishfaq answered |
A is true ,but reason is false
Directions: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Population of India crossed one billion in May 2000.Reason: The result of the rapid decline in death rate, the maternal mortality rate (MMR) and infant mortality rate (IMR), and an increase in the number of people in reproducible age.- a)If both Assertion & Reason are true, and the reason is the correct explanation of the assertion.
- b)If both Assertion & Reason are true, but the reason is not the correct explanation of the assertion.
- c)If the Assertion is a true statement, but Reason is false.
- d)If both Assertion and Reason are false statements.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion: Population of India crossed one billion in May 2000.
Reason: The result of the rapid decline in death rate, the maternal mortality rate (MMR) and infant mortality rate (IMR), and an increase in the number of people in reproducible age.
a)
If both Assertion & Reason are true, and the reason is the correct explanation of the assertion.
b)
If both Assertion & Reason are true, but the reason is not the correct explanation of the assertion.
c)
If the Assertion is a true statement, but Reason is false.
d)
If both Assertion and Reason are false statements.
|
EduRev NEET answered |
Death rate has fallen due to improved personal hygiene, sanitation and modern medicines. IMR and MMR have decreased due to better medical facilities.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Higher plants have meristematic regions for indefinite growth.Reason: Higher plants have root and shoot apices.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Higher plants have meristematic regions for indefinite growth.
Reason: Higher plants have root and shoot apices.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Ciel Knowledge answered |
The root apex and shoot apex are meristematic in nature. These meristematic tissues are embryonic in origin. They are primary in origin because it develops from embryonic tissues and primary in function because they form the primary structure of the plant cell, the root apex and shoot apex, that live till the death of the whole plant. Hence, plants have the feature of indefinite growth.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion: Bacillus anthracis exemplifies how biotechnology can be used for destructive processes.
Reason: Anthrax bacterium spores were spread via letters in the form of powder.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Bacillus anthracis exemplifies how biotechnology can be used for destructive processes.
Reason: Anthrax bacterium spores were spread via letters in the form of powder.
Reason: Anthrax bacterium spores were spread via letters in the form of powder.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
EduRev NEET answered |
In welfare of human race biotechnology has extensively used but it can used for destructive purposes too. One such use of biotechnology are bioweapons. War which is fought by bioweapons against human and or their crops and animals is called biowar. Viruses, bacteria and some other harmful organisms can be used as biological weapons. Bioweapons take much less space than traditional weapons and can be far more disastrous. One such example is Anthrax bacterium which was sent through letters after September 2001.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion: Algae and fungi are grouped in thallophyta. Reason: Algae and fungi show no differentiation in thallus.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Algae and fungi are grouped in thallophyta.
Reason: Algae and fungi show no differentiation in thallus.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
EduRev NEET answered |
On the basis of
- Thallus like non-vascular plant body.
- Simple, unicellular non-jacketed sex organs and
- No embryo development after gametic union, the algae and fungi have long been grouped together in thallophyta. The algae and fungi are the result of parallel development and do not indicate any phylogenetic relationship.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion: The stromal thylakoids are rich in both PS I and PS II.Reason: The granal membranes are rich in ATP synthetase.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'D'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: The stromal thylakoids are rich in both PS I and PS II.
Reason: The granal membranes are rich in ATP synthetase.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Top Rankers answered |
The grana stacks of membranes are enriched in PS II and LHC (Light harvesting centre), while there is little ATP synthetase. On the other hand, a fraction of stroma thylakoids is rich in PS I and ATPase and poor in PS II and LHC
Directions: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A): Flowers are structure of sexual reproduction.
Reason (R): Different type of embryological process occur inside the flower.- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A): Flowers are structure of sexual reproduction.
Reason (R): Different type of embryological process occur inside the flower.
Assertion (A): Flowers are structure of sexual reproduction.
Reason (R): Different type of embryological process occur inside the flower.
a)
Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
b)
Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
c)
Assertion (A) is true but reason (R) is false.
d)
Assertion (A) is false but reason (R) is true.
|
Nilesh Choudhury answered |
Explanation:
First, let's break down the assertion and reason given in the question.
Assertion (A): Flowers are structures of sexual reproduction.
Reason (R): Different types of embryological processes occur inside the flower.
Now, let's analyze why option 'A' is the correct answer.
Both assertion (A) and reason (R) are true: Flowers are indeed structures of sexual reproduction in plants. They contain reproductive organs such as stamens and pistils which are involved in the process of sexual reproduction. Additionally, different types of embryological processes such as pollination, fertilization, and seed development occur inside the flower.
Reason (R) is the correct explanation of assertion (A): The reason provided explains why flowers are considered structures of sexual reproduction. The presence of various embryological processes inside the flower supports the assertion that flowers play a crucial role in the reproduction of plants.
Therefore, option 'A' is the correct choice as both the assertion and reason are true, and the reason correctly explains the assertion. Flowers serve as the reproductive structures of plants where various embryological processes take place to ensure the continuation of the plant species.
First, let's break down the assertion and reason given in the question.
Assertion (A): Flowers are structures of sexual reproduction.
Reason (R): Different types of embryological processes occur inside the flower.
Now, let's analyze why option 'A' is the correct answer.
Both assertion (A) and reason (R) are true: Flowers are indeed structures of sexual reproduction in plants. They contain reproductive organs such as stamens and pistils which are involved in the process of sexual reproduction. Additionally, different types of embryological processes such as pollination, fertilization, and seed development occur inside the flower.
Reason (R) is the correct explanation of assertion (A): The reason provided explains why flowers are considered structures of sexual reproduction. The presence of various embryological processes inside the flower supports the assertion that flowers play a crucial role in the reproduction of plants.
Therefore, option 'A' is the correct choice as both the assertion and reason are true, and the reason correctly explains the assertion. Flowers serve as the reproductive structures of plants where various embryological processes take place to ensure the continuation of the plant species.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Stems of some plants protect them from browsing animals.Reason: Axillary buds of stems of these plants are modified into thorns- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Stems of some plants protect them from browsing animals.
Reason: Axillary buds of stems of these plants are modified into thorns
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Ambition Institute answered |
Stems are modified to perform different functions like storage, protection, mechanical support and photosynthesis etc. Axillary buds of stems may also get modified into woody, straight and pointed thorns.Thorns are found in many plants such as Citrus, Bougainvillea, etc. They protect plants from browsing animals and also reduce transpiration.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Animals that have an exoskeleton, lacks an endoskeleton.Reason: Skeleton cells in the embryonic stage migrate to either stage and produce exoskeleton or endoskeleton but never both.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'D'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Animals that have an exoskeleton, lacks an endoskeleton.
Reason: Skeleton cells in the embryonic stage migrate to either stage and produce exoskeleton or endoskeleton but never both.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Top Rankers answered |
Many animals have an endoskeleton and exoskeleton such as Chelon-turtle or Testudo-tortoise. Exoskeleton of other animals include chitinous plate, calcareous shell, horny scales, feathers, hair, claws, nails, hoofs, horns and antlers.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: No two species can occupy the same ecological niche in a habitat.
Reason: A habitat can contain only on ecological niche.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: No two species can occupy the same ecological niche in a habitat.
Reason: A habitat can contain only on ecological niche.
Reason: A habitat can contain only on ecological niche.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Harshitha Reddy answered |
Explanation:
Assertion:
No two species can occupy the same ecological niche in a habitat.
Reason:
A habitat can contain only one ecological niche.
Explanation:
- An ecological niche refers to the role and position a species has in its environment, including how it obtains resources and interacts with other species.
- If two species were to occupy the exact same ecological niche, there would be intense competition between them for resources, which could ultimately lead to one species outcompeting the other.
- This is known as competitive exclusion, where one species is driven to extinction or forced to evolve to occupy a different niche to avoid direct competition.
- Therefore, to avoid such competition, species tend to occupy slightly different niches within a habitat, allowing them to coexist without directly competing for the same resources.
- Hence, the assertion that no two species can occupy the same ecological niche in a habitat is true because of the need to avoid competitive exclusion.
Therefore, the correct answer is option 'C' - If Assertion is true but Reason is false.
Assertion:
No two species can occupy the same ecological niche in a habitat.
Reason:
A habitat can contain only one ecological niche.
Explanation:
- An ecological niche refers to the role and position a species has in its environment, including how it obtains resources and interacts with other species.
- If two species were to occupy the exact same ecological niche, there would be intense competition between them for resources, which could ultimately lead to one species outcompeting the other.
- This is known as competitive exclusion, where one species is driven to extinction or forced to evolve to occupy a different niche to avoid direct competition.
- Therefore, to avoid such competition, species tend to occupy slightly different niches within a habitat, allowing them to coexist without directly competing for the same resources.
- Hence, the assertion that no two species can occupy the same ecological niche in a habitat is true because of the need to avoid competitive exclusion.
Therefore, the correct answer is option 'C' - If Assertion is true but Reason is false.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Besides curdling of milk, LAB also improve its nutritional quality by increasing vitamin-B12.
Reason: LAB, when present in human stomach, check disease causing microbes.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Besides curdling of milk, LAB also improve its nutritional quality by increasing vitamin-B12.
Reason: LAB, when present in human stomach, check disease causing microbes.
Reason: LAB, when present in human stomach, check disease causing microbes.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Subhankar Das answered |
Explanation:
Assertion and Reason Analysis
- Assertion: LAB improve the nutritional quality of milk by increasing vitamin B12.
- Reason: LAB, when present in the human stomach, check disease-causing microbes.
Explanation
- Assertion is true: Lactic acid bacteria (LAB) are known to increase the vitamin B12 content in milk through their metabolic activities.
- Reason is true: LAB present in the stomach help in maintaining a healthy gut microbiota by inhibiting the growth of harmful bacteria.
Relationship between Assertion and Reason
- The reason provided does not directly explain why LAB increase the nutritional quality of milk by increasing vitamin B12.
- While both the assertion and reason are true, the reason does not serve as the correct explanation for the assertion.
Therefore, the correct answer is option B - If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Assertion and Reason Analysis
- Assertion: LAB improve the nutritional quality of milk by increasing vitamin B12.
- Reason: LAB, when present in the human stomach, check disease-causing microbes.
Explanation
- Assertion is true: Lactic acid bacteria (LAB) are known to increase the vitamin B12 content in milk through their metabolic activities.
- Reason is true: LAB present in the stomach help in maintaining a healthy gut microbiota by inhibiting the growth of harmful bacteria.
Relationship between Assertion and Reason
- The reason provided does not directly explain why LAB increase the nutritional quality of milk by increasing vitamin B12.
- While both the assertion and reason are true, the reason does not serve as the correct explanation for the assertion.
Therefore, the correct answer is option B - If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Sigmoid growth curve consists of four parts.Reason: Lag phase is also known as grand phase of growth.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Sigmoid growth curve consists of four parts.
Reason: Lag phase is also known as grand phase of growth.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Garima Roy answered |
Assertion:
Lag phase is the grand phase of growth in the sigmoid growth curve.
Reason:
The sigmoid growth curve consists of four parts.
Explanation:
The correct answer is option 'C', which states that the Assertion is true but the Reason is false.
Assertion Explanation:
- The lag phase is the first phase of the sigmoid growth curve, characterized by slow or no growth as the cells adapt to their new environment or conditions. It is not known as the grand phase of growth; instead, it is the initial phase that sets the stage for subsequent growth.
- The sigmoid growth curve consists of four main phases: lag phase, exponential (log) phase, stationary phase, and death phase. Each phase represents a different stage of growth and decline in a population of cells.
Reason Explanation:
- While it is true that the sigmoid growth curve consists of four parts, the statement that lag phase is known as the grand phase of growth is incorrect. The lag phase is not considered the main growth phase but rather a preparatory phase before cells enter the rapid growth phase known as the exponential phase.
In conclusion, the Assertion is true as it correctly identifies the lag phase in the sigmoid growth curve, but the Reason is false as it inaccurately describes the lag phase as the grand phase of growth.
Lag phase is the grand phase of growth in the sigmoid growth curve.
Reason:
The sigmoid growth curve consists of four parts.
Explanation:
The correct answer is option 'C', which states that the Assertion is true but the Reason is false.
Assertion Explanation:
- The lag phase is the first phase of the sigmoid growth curve, characterized by slow or no growth as the cells adapt to their new environment or conditions. It is not known as the grand phase of growth; instead, it is the initial phase that sets the stage for subsequent growth.
- The sigmoid growth curve consists of four main phases: lag phase, exponential (log) phase, stationary phase, and death phase. Each phase represents a different stage of growth and decline in a population of cells.
Reason Explanation:
- While it is true that the sigmoid growth curve consists of four parts, the statement that lag phase is known as the grand phase of growth is incorrect. The lag phase is not considered the main growth phase but rather a preparatory phase before cells enter the rapid growth phase known as the exponential phase.
In conclusion, the Assertion is true as it correctly identifies the lag phase in the sigmoid growth curve, but the Reason is false as it inaccurately describes the lag phase as the grand phase of growth.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: In fungi, vegetative reproduction occurs by fragmentation and budding. Reason: Asexual reproduction in fungi, occurs through formation of asexual spores.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: In fungi, vegetative reproduction occurs by fragmentation and budding.
Reason: Asexual reproduction in fungi, occurs through formation of asexual spores.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Infinity Academy answered |
In fungi, vegetative reproduction occurs by fragmentation, budding (yeast), sclerotia, rhizomorphs, etc. Asexual reproduction occurs through formation of asexual spores such as zoospores, sporangiospores, chlamydospores, oidia, conidia, etc.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The amino acid glycine comes under the category of nonessential amino acids.Reason: This is due to the fact that it can not be synthesised in the body.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: The amino acid glycine comes under the category of nonessential amino acids.
Reason: This is due to the fact that it can not be synthesised in the body.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Janhavi Menon answered |
Explanation:
Assertion and Reason questions are a type of multiple-choice question where you have to determine the relationship between two statements. Let's break down the given Assertion and Reason in this question:
- Assertion: The amino acid glycine comes under the category of nonessential amino acids.
- Reason: This is due to the fact that it cannot be synthesized in the body.
Now, let's analyze why the correct answer is option 'C':
- If Assertion is true but Reason is false: This option is incorrect because glycine is indeed a nonessential amino acid. Nonessential amino acids are those that the body can synthesize on its own and do not need to be obtained through the diet. Glycine falls into this category.
- If both Assertion and Reason are true but Reason is not the correct explanation of Assertion: This option is also incorrect because the Reason provided is actually a valid explanation for why glycine is considered a nonessential amino acid. Despite the fact that the body cannot synthesize glycine, it is still classified as nonessential because it can be produced from other amino acids within the body.
Therefore, the correct answer is option 'C' - If Assertion is true but Reason is false. This is because glycine is indeed a nonessential amino acid, but the Reason stating that it cannot be synthesized in the body is not accurate.
Assertion and Reason questions are a type of multiple-choice question where you have to determine the relationship between two statements. Let's break down the given Assertion and Reason in this question:
- Assertion: The amino acid glycine comes under the category of nonessential amino acids.
- Reason: This is due to the fact that it cannot be synthesized in the body.
Now, let's analyze why the correct answer is option 'C':
- If Assertion is true but Reason is false: This option is incorrect because glycine is indeed a nonessential amino acid. Nonessential amino acids are those that the body can synthesize on its own and do not need to be obtained through the diet. Glycine falls into this category.
- If both Assertion and Reason are true but Reason is not the correct explanation of Assertion: This option is also incorrect because the Reason provided is actually a valid explanation for why glycine is considered a nonessential amino acid. Despite the fact that the body cannot synthesize glycine, it is still classified as nonessential because it can be produced from other amino acids within the body.
Therefore, the correct answer is option 'C' - If Assertion is true but Reason is false. This is because glycine is indeed a nonessential amino acid, but the Reason stating that it cannot be synthesized in the body is not accurate.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion: Specialization of cells is advantageous for the organisms.Reason: It increases the operational efficiency of an organism.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Specialization of cells is advantageous for the organisms.
Reason: It increases the operational efficiency of an organism.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Imk Pathsala answered |
Specialization of cells into tissue, organ and organ systems is advantageous for the organisms. It increases the operational efficiency through division of labour which avoids duplication of work.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Insects develop a complex system of air tubes called trachea for respiratory purpose.Reason: Exchange through body surface is not possible in insects.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Insects develop a complex system of air tubes called trachea for respiratory purpose.
Reason: Exchange through body surface is not possible in insects.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Shraddha Sharma answered |
Assertion and Reason Explanation:
Explanation of Correct Answer:
- Assertion: Insects develop a complex system of air tubes called trachea for respiratory purpose.
- Reason: Exchange through body surface is not possible in insects.
Explanation:
- Insects have a highly efficient respiratory system that includes a network of air tubes called trachea. These tracheal tubes branch out throughout the insect's body, delivering oxygen directly to the cells.
- The reason why insects have developed trachea is because their body size and structure do not allow for efficient gas exchange through the body surface alone. Insects have a hard exoskeleton that covers their body, which prevents gases from easily diffusing in and out.
- Therefore, the assertion that insects develop trachea for respiratory purposes is true. The reason provided, which states that exchange through the body surface is not possible in insects, is also true.
- Hence, the correct answer is option 'A' - If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Explanation of Correct Answer:
- Assertion: Insects develop a complex system of air tubes called trachea for respiratory purpose.
- Reason: Exchange through body surface is not possible in insects.
Explanation:
- Insects have a highly efficient respiratory system that includes a network of air tubes called trachea. These tracheal tubes branch out throughout the insect's body, delivering oxygen directly to the cells.
- The reason why insects have developed trachea is because their body size and structure do not allow for efficient gas exchange through the body surface alone. Insects have a hard exoskeleton that covers their body, which prevents gases from easily diffusing in and out.
- Therefore, the assertion that insects develop trachea for respiratory purposes is true. The reason provided, which states that exchange through the body surface is not possible in insects, is also true.
- Hence, the correct answer is option 'A' - If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Living organisms are regarded as open systems.
Reason: Energy of living organisms can be lost or gained from external environment.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'D'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Living organisms are regarded as open systems.
Reason: Energy of living organisms can be lost or gained from external environment.
Reason: Energy of living organisms can be lost or gained from external environment.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Nishtha Shah answered |
Explanation:
Assertion and Reason Analysis
Living organisms are regarded as open systems because they interact with their environment, exchanging matter and energy. The energy of living organisms can be lost or gained from the external environment, which is why they are considered open systems.
Correct Answer Justification
The correct answer is option 'D' because both the Assertion and Reason are false. Living organisms are actually considered closed systems since they do not exchange matter with their environment, although they do exchange energy. Therefore, the Reason is incorrect as it states that living organisms can lose or gain energy from the external environment, which is not entirely accurate.
Conclusion
In conclusion, it is essential to understand the concept of open and closed systems in living organisms to grasp their interactions with the environment. While living organisms are considered closed systems in terms of matter exchange, they are open systems in terms of energy exchange.
Assertion and Reason Analysis
Living organisms are regarded as open systems because they interact with their environment, exchanging matter and energy. The energy of living organisms can be lost or gained from the external environment, which is why they are considered open systems.
Correct Answer Justification
The correct answer is option 'D' because both the Assertion and Reason are false. Living organisms are actually considered closed systems since they do not exchange matter with their environment, although they do exchange energy. Therefore, the Reason is incorrect as it states that living organisms can lose or gain energy from the external environment, which is not entirely accurate.
Conclusion
In conclusion, it is essential to understand the concept of open and closed systems in living organisms to grasp their interactions with the environment. While living organisms are considered closed systems in terms of matter exchange, they are open systems in terms of energy exchange.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Glycolysis occurs in cytoplasm.Reason: Enzymes for glycolysis are found in cytoplasm. It is common in aerobic/anaerobic respiration.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Glycolysis occurs in cytoplasm.
Reason: Enzymes for glycolysis are found in cytoplasm. It is common in aerobic/anaerobic respiration.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Aditi Singh answered |
Assertion: Glycolysis Occurs in Cytoplasm
Glycolysis is the metabolic pathway that converts glucose into pyruvate, producing a small amount of ATP and NADH in the process. This pathway does indeed occur in the cytoplasm of the cell, not in any organelle.
Reason: Enzymes for Glycolysis are Found in Cytoplasm
The enzymes required for glycolysis, such as hexokinase, phosphofructokinase, and pyruvate kinase, are located in the cytoplasm. This localization is crucial because it allows glycolysis to function efficiently in breaking down glucose to generate energy, whether in aerobic or anaerobic conditions.
Evaluation of Assertion and Reason
- Both the assertion and reason are true:
- Assertion: Glycolysis occurs in the cytoplasm.
- Reason: Enzymes for glycolysis are indeed located in the cytoplasm.
- The reason correctly explains the assertion:
- The presence of glycolytic enzymes in the cytoplasm supports and facilitates the occurrence of glycolysis in that location.
Conclusion
Therefore, the correct option is A: both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion. Glycolysis' reliance on cytoplasmic enzymes is fundamental to its function in cellular metabolism, making this a cohesive and accurate pairing of statements.
Glycolysis is the metabolic pathway that converts glucose into pyruvate, producing a small amount of ATP and NADH in the process. This pathway does indeed occur in the cytoplasm of the cell, not in any organelle.
Reason: Enzymes for Glycolysis are Found in Cytoplasm
The enzymes required for glycolysis, such as hexokinase, phosphofructokinase, and pyruvate kinase, are located in the cytoplasm. This localization is crucial because it allows glycolysis to function efficiently in breaking down glucose to generate energy, whether in aerobic or anaerobic conditions.
Evaluation of Assertion and Reason
- Both the assertion and reason are true:
- Assertion: Glycolysis occurs in the cytoplasm.
- Reason: Enzymes for glycolysis are indeed located in the cytoplasm.
- The reason correctly explains the assertion:
- The presence of glycolytic enzymes in the cytoplasm supports and facilitates the occurrence of glycolysis in that location.
Conclusion
Therefore, the correct option is A: both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion. Glycolysis' reliance on cytoplasmic enzymes is fundamental to its function in cellular metabolism, making this a cohesive and accurate pairing of statements.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Chemotaxonomy is classifying organisms at molecular level. Reason: Cytotaxonomy is classifying organisms at cellular level.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Chemotaxonomy is classifying organisms at molecular level.
Reason: Cytotaxonomy is classifying organisms at cellular level.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Bs Academy answered |
All the members of a species have similar karyotype (cytotaxonomy) - there is similarity in the number, size, shape and behaviour of chromosomes. At th e molecular level, there is similarity in the types of proteins, enzymes, hormones and other biochemicals.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Rennet and fruit extract of Withania somnifera have antagonistic functions.
Reason: Rennet is obtained from calf's liver and is used for curdling of milk.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'D'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Rennet and fruit extract of Withania somnifera have antagonistic functions.
Reason: Rennet is obtained from calf's liver and is used for curdling of milk.
Reason: Rennet is obtained from calf's liver and is used for curdling of milk.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Top Rankers answered |
Rennet is obtained from calf 's stomach and is a commercially available form of enzyme rennin. Rennet is used from curdling of milk to initiate the process of cheese formation. The same function can be carried out with the help of fruit extract of Withania somnifera. Thus, rennet and fruit extract of Withania somnifera have similar functions and are not antagonistic.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive.Reason: Secondary metabolites can be commercially produced by using tissue culture technique.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive.
Reason: Secondary metabolites can be commercially produced by using tissue culture technique.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Janhavi Menon answered |
Explanation:
Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive. This is because secondary metabolites are not essential for the survival of the plant and are often produced in response to specific environmental conditions or stress factors. Due to their limited quantities and varied chemical properties, extracting secondary metabolites from plants can be a complex and expensive process.
Reasoning:
The statement that secondary metabolites can be commercially produced by using tissue culture technique is true. Tissue culture technique involves growing plant cells, tissues, or organs in a controlled environment to produce secondary metabolites in a more efficient and cost-effective manner. This technique allows for the mass production of secondary metabolites under controlled conditions, reducing the reliance on plant extraction methods.
Conclusion:
Therefore, both the assertion that secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive, and the reason that secondary metabolites can be commercially produced by using tissue culture technique are true. However, the reason is not a direct explanation of the assertion, as it provides an alternative method for producing secondary metabolites rather than addressing the challenges associated with plant extraction. Hence, option 'B' is the correct answer.
Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive. This is because secondary metabolites are not essential for the survival of the plant and are often produced in response to specific environmental conditions or stress factors. Due to their limited quantities and varied chemical properties, extracting secondary metabolites from plants can be a complex and expensive process.
Reasoning:
The statement that secondary metabolites can be commercially produced by using tissue culture technique is true. Tissue culture technique involves growing plant cells, tissues, or organs in a controlled environment to produce secondary metabolites in a more efficient and cost-effective manner. This technique allows for the mass production of secondary metabolites under controlled conditions, reducing the reliance on plant extraction methods.
Conclusion:
Therefore, both the assertion that secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive, and the reason that secondary metabolites can be commercially produced by using tissue culture technique are true. However, the reason is not a direct explanation of the assertion, as it provides an alternative method for producing secondary metabolites rather than addressing the challenges associated with plant extraction. Hence, option 'B' is the correct answer.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: In birds and reptiles, main excretory product is the combined form of urine and faeces.Reason: Birds and reptiles consists no separate chamber for excretion of urine and faeces.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: In birds and reptiles, main excretory product is the combined form of urine and faeces.
Reason: Birds and reptiles consists no separate chamber for excretion of urine and faeces.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Bs Academy answered |
In birds and reptiles, ureters and the rectum open into a common sac is known as the cloaca (as there is no chamber for urine and faces) for these two that stores both, and reabsorb water from them and ultimately executed these white and brownish black material along with aqueous fluid.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion: Members of phaeophyceae vary in colour from olive green to various shades of brownReason: Phaeophyceae possess chlorophyll ac, carotenoids and xanthophylls.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Members of phaeophyceae vary in colour from olive green to various shades of brown
Reason: Phaeophyceae possess chlorophyll ac, carotenoids and xanthophylls.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Advait Nair answered |
Explanation of Assertion and Reason
The assertion states that members of Phaeophyceae, commonly known as brown algae, exhibit a range of colors from olive green to various shades of brown. This is an accurate observation reflecting the pigmentation in these organisms.
Understanding the Reason
The reason provided is that Phaeophyceae contain chlorophyll-a, carotenoids, and xanthophylls. These pigments are crucial for photosynthesis and contribute to the coloration of these algae.
Connection Between Assertion and Reason
- The presence of chlorophyll-a allows Phaeophyceae to capture light energy for photosynthesis.
- Carotenoids and xanthophylls, which are accessory pigments, absorb different wavelengths of light, thus influencing the overall color of the algae.
- This combination of pigments explains why members of Phaeophyceae can exhibit a range of colors, primarily brown and olive shades.
Conclusion
Given that both the assertion and the reason are true, and the reason directly explains why the assertion holds true, the correct choice is:
Option A: If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
This illustrates the relationship between the pigments present in Phaeophyceae and their color variations effectively.
The assertion states that members of Phaeophyceae, commonly known as brown algae, exhibit a range of colors from olive green to various shades of brown. This is an accurate observation reflecting the pigmentation in these organisms.
Understanding the Reason
The reason provided is that Phaeophyceae contain chlorophyll-a, carotenoids, and xanthophylls. These pigments are crucial for photosynthesis and contribute to the coloration of these algae.
Connection Between Assertion and Reason
- The presence of chlorophyll-a allows Phaeophyceae to capture light energy for photosynthesis.
- Carotenoids and xanthophylls, which are accessory pigments, absorb different wavelengths of light, thus influencing the overall color of the algae.
- This combination of pigments explains why members of Phaeophyceae can exhibit a range of colors, primarily brown and olive shades.
Conclusion
Given that both the assertion and the reason are true, and the reason directly explains why the assertion holds true, the correct choice is:
Option A: If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
This illustrates the relationship between the pigments present in Phaeophyceae and their color variations effectively.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Family planning is an action plan to attain reproductive health among people.Reason: Improved programmes covering reproduction related areas were propagated by RCH to create awareness among people.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Family planning is an action plan to attain reproductive health among people.
Reason: Improved programmes covering reproduction related areas were propagated by RCH to create awareness among people.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Ciel Knowledge answered |
Family planning helps in maintaining reproductive health.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Failure of secretion of hormone vasopressin causes diabetes mellitus in the patient.Reason: Vasopressin increases the volume of urine by increasing the reabsorption of water from the urine.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'D'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Failure of secretion of hormone vasopressin causes diabetes mellitus in the patient.
Reason: Vasopressin increases the volume of urine by increasing the reabsorption of water from the urine.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Ambition Institute answered |
Vasopressin or anti-diuretic hormone (ADH) reduces the volume of urine by increasing the reabsorption of water from the urine in the distal convoluted tubules, collecting tubules and collecting ducts in the kidney. It does so by rendering the walls of these tubules leads to diabetes insipidus (increased urination). Although the volume of urine is increased. No glucose appears in the urine of such patients. Diabetes mellitus is a disease which is caused due to the failure of insulin hormone secretion by the pancreatic islets. The osmotic effect of glucose in the urine considerably increases the volume of urine, due to which thirst is also enhanced. In extreme cases, the patient suffers from coma and may die.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: A piece of DNA inserted into an alien organism generally does not replicate if not inserted into a chromosome.
Reason: Chromosomes have specific sequences called 'ori' region where DNA replication is initiated.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: A piece of DNA inserted into an alien organism generally does not replicate if not inserted into a chromosome.
Reason: Chromosomes have specific sequences called 'ori' region where DNA replication is initiated.
Reason: Chromosomes have specific sequences called 'ori' region where DNA replication is initiated.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Jhanvi Sen answered |
Understanding the Assertion
The assertion states that a piece of DNA inserted into an alien organism does not replicate unless it is integrated into a chromosome. This is fundamentally true because:
- The replication of DNA requires specific sequences and structures.
- Free-floating DNA in the cell lacks the necessary elements for replication.
Explaining the Reason
The reason provided is that chromosomes contain specific sequences known as the ori region (origin of replication). This is also true because:
- The ori region is where DNA replication is initiated.
- Chromosomes provide the necessary machinery and context for DNA replication processes.
Connection Between Assertion and Reason
Both the assertion and the reason are true.
- The assertion highlights the necessity of chromosomal integration for DNA replication.
- The reason explains why chromosomes are essential: they contain the ori regions vital for initiating replication.
However, the reason directly supports the assertion by explaining the mechanism behind it. Thus, the reason serves as a correct explanation for the assertion.
Conclusion
Since both the assertion and the reason are true, and the reason correctly explains the assertion, the correct choice is:
- Option A: If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
This understanding is crucial in molecular biology, especially when studying gene cloning and manipulation in genetic engineering.
The assertion states that a piece of DNA inserted into an alien organism does not replicate unless it is integrated into a chromosome. This is fundamentally true because:
- The replication of DNA requires specific sequences and structures.
- Free-floating DNA in the cell lacks the necessary elements for replication.
Explaining the Reason
The reason provided is that chromosomes contain specific sequences known as the ori region (origin of replication). This is also true because:
- The ori region is where DNA replication is initiated.
- Chromosomes provide the necessary machinery and context for DNA replication processes.
Connection Between Assertion and Reason
Both the assertion and the reason are true.
- The assertion highlights the necessity of chromosomal integration for DNA replication.
- The reason explains why chromosomes are essential: they contain the ori regions vital for initiating replication.
However, the reason directly supports the assertion by explaining the mechanism behind it. Thus, the reason serves as a correct explanation for the assertion.
Conclusion
Since both the assertion and the reason are true, and the reason correctly explains the assertion, the correct choice is:
- Option A: If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
This understanding is crucial in molecular biology, especially when studying gene cloning and manipulation in genetic engineering.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Biotic community has higher position than population in ecological hierarchy.
Reason: Population of similar individuals remains isolated in the community.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Biotic community has higher position than population in ecological hierarchy.
Reason: Population of similar individuals remains isolated in the community.
Reason: Population of similar individuals remains isolated in the community.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Ciel Knowledge answered |
The organisms of all the species that live in a particular area and interact in various ways with one another form biotic community. Biotic community is a grouping that is higher than population. It is an assemblage of all the populations of different organisms occurring in an area. The different populations of a community do not remain isolated. They show interactions and inter-dependence.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: By insertion of gene encoding complementary RNA only the RNAi can be introduced in an organism.
Reason: In vitro there are no methods by which synthesised complementary RNA can be inserted in an organism to induce RNAi (RNA interference).- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'D'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: By insertion of gene encoding complementary RNA only the RNAi can be introduced in an organism.
Reason: In vitro there are no methods by which synthesised complementary RNA can be inserted in an organism to induce RNAi (RNA interference).
Reason: In vitro there are no methods by which synthesised complementary RNA can be inserted in an organism to induce RNAi (RNA interference).
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Bs Academy answered |
RNAi (RNA interference) occurs in all eukaryotic organisms as a method of cellular defense. This method involves silencing of a specific mRNA due to a complementary dsRNA molecule that binds to specific mRNA and prevents translation of the mRNA. To induce RNA interference in any organism in vitro there are two methods, the complementary RNA can be synthesized and then annealed to produce dsRNA and inserted into cells or the cells are genetically modified to produce the two complementary RNA strands or duplex form in vivo by transcription. However, the first method i.e., in vitro insertion of synthesized complementary RNA stops target gene expression for only 4-6 days and their re-introduction is required. But the second method i.e., the vector DNA construct once transfected into the cells, will keep on generating RNA interference and hence, cause a permanent inhibition of the damage.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: DNA acts as a genetic material in all organisms.
Reason: It is a single-stranded molecule.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'D'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: DNA acts as a genetic material in all organisms.
Reason: It is a single-stranded molecule.
Reason: It is a single-stranded molecule.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Roshni Ahuja answered |
Explanation:
Assertion and Reason Analysis
- The correct answer is option 'D' which states that both Assertion and Reason are false.
- The reason for this is that the statement in the Assertion is incorrect as DNA is not a single-stranded molecule, rather it is a double-stranded molecule.
- DNA consists of two strands that are arranged in a double helix structure, with each strand running in opposite directions.
- Therefore, since the Assertion is false, the Reason cannot be used to explain it.
Conclusion
- In this case, the Assertion that DNA acts as a genetic material in all organisms is true, but the Reason provided is incorrect.
- DNA serves as the genetic material in organisms because of its ability to store and transmit genetic information from one generation to the next.
- It does so through its double-stranded structure, which allows for accurate replication and transmission of genetic information.
Assertion and Reason Analysis
- The correct answer is option 'D' which states that both Assertion and Reason are false.
- The reason for this is that the statement in the Assertion is incorrect as DNA is not a single-stranded molecule, rather it is a double-stranded molecule.
- DNA consists of two strands that are arranged in a double helix structure, with each strand running in opposite directions.
- Therefore, since the Assertion is false, the Reason cannot be used to explain it.
Conclusion
- In this case, the Assertion that DNA acts as a genetic material in all organisms is true, but the Reason provided is incorrect.
- DNA serves as the genetic material in organisms because of its ability to store and transmit genetic information from one generation to the next.
- It does so through its double-stranded structure, which allows for accurate replication and transmission of genetic information.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : Coughing and sneezing are necessary.Reason : Coughing and sneezing are reflex actions- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : Coughing and sneezing are necessary.
Reason : Coughing and sneezing are reflex actions
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Stepway Academy answered |
Coughing and sneezing should to take place because these reactions serve to keep the air passages free from foreign matter. Coughing is a reflex action under nervous control. The minute receptors found in the wall of trachea, bronchi, bronchioles and alveoli are highly sensitive to foreign matter (smoke, dust etc.) Like coughing, sneezing is also a reflex action triggered because of irritation to nasal passages. In this, sensory impulses travel from nasal passages to the medulla through trigeminal nerves. The reaction involves the same series of events as in cough reflex, but the air explodes out both through nose and mouth, expelling the foreign matter from nasal passages.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: A food web is a network of food chains existing together in an ecosystem.
Reason: An animal like kite cannot be a part of a food web.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: A food web is a network of food chains existing together in an ecosystem.
Reason: An animal like kite cannot be a part of a food web.
Reason: An animal like kite cannot be a part of a food web.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Aarav Yadav answered |
Understanding the Assertion and Reason
The question presents an assertion and a reason regarding food webs and the role of animals within them.
Assertion Analysis
- A food web is indeed defined as a network of food chains that coexist within an ecosystem.
- It illustrates the complex interconnections between different species, showing how energy and nutrients flow.
Reason Analysis
- The reason provided states that an animal like a kite cannot be part of a food web.
- This statement is false because kites, as birds of prey, are integral components of many ecosystems and participate in various food webs.
Conclusion of the Analysis
- Since the assertion is true (a food web is a network of food chains) and the reason is false (kites can be part of food webs), the correct choice is option 'C'.
- This indicates that while the assertion holds validity, the reasoning presented fails to support or explain it.
Key Points to Remember
- Food Web Definition: A complex network of interconnected food chains.
- Role of Kites: As predators, kites play a vital role in their ecosystems, thus are part of food webs.
- Correct Answer Choice: C (Assertion true, Reason false).
This clarifies the reasoning behind the answer, emphasizing the importance of the validity of both statements in the context of ecology.
The question presents an assertion and a reason regarding food webs and the role of animals within them.
Assertion Analysis
- A food web is indeed defined as a network of food chains that coexist within an ecosystem.
- It illustrates the complex interconnections between different species, showing how energy and nutrients flow.
Reason Analysis
- The reason provided states that an animal like a kite cannot be part of a food web.
- This statement is false because kites, as birds of prey, are integral components of many ecosystems and participate in various food webs.
Conclusion of the Analysis
- Since the assertion is true (a food web is a network of food chains) and the reason is false (kites can be part of food webs), the correct choice is option 'C'.
- This indicates that while the assertion holds validity, the reasoning presented fails to support or explain it.
Key Points to Remember
- Food Web Definition: A complex network of interconnected food chains.
- Role of Kites: As predators, kites play a vital role in their ecosystems, thus are part of food webs.
- Correct Answer Choice: C (Assertion true, Reason false).
This clarifies the reasoning behind the answer, emphasizing the importance of the validity of both statements in the context of ecology.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Mendel was successful in his hybridization.Reason: Garden pea proved ideal experimental material.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Mendel was successful in his hybridization.
Reason: Garden pea proved ideal experimental material.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Jhanvi Bajaj answered |
Understanding the Assertion and Reason
The assertion states that "Mendel was successful in his hybridization," which is indeed true. Mendel's experiments with pea plants laid the foundation for the field of genetics.
Reasons for Mendel's Success
The reason provided is that "Garden pea proved ideal experimental material." This is also true, as the garden pea (Pisum sativum) has several characteristics that made it ideal for Mendel's experiments:
- Easy to Cultivate: Pea plants are simple to grow and have a short generation time.
- Distinct Traits: They exhibit clear and easily observable traits, such as flower color and seed shape.
- Controlled Pollination: Mendel could easily control the pollination process, allowing him to perform hybridizations.
Analysis of the Relationship
While both statements are true, the reason does not fully explain why Mendel was successful in his hybridization:
- Multiple Factors: Mendel's success was not solely due to the use of garden peas. His meticulous methods, statistical analysis, and the principles he formulated (like the laws of segregation and independent assortment) were crucial.
- Broader Implications: The choice of garden pea was an important factor, but the broader understanding of genetics and experimental design contributed significantly to his success.
Conclusion
This leads to the conclusion that the correct answer is option 'B':
- Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Mendel's success in hybridization resulted from a combination of his experimental design and the traits of the garden pea, rather than the latter alone.
The assertion states that "Mendel was successful in his hybridization," which is indeed true. Mendel's experiments with pea plants laid the foundation for the field of genetics.
Reasons for Mendel's Success
The reason provided is that "Garden pea proved ideal experimental material." This is also true, as the garden pea (Pisum sativum) has several characteristics that made it ideal for Mendel's experiments:
- Easy to Cultivate: Pea plants are simple to grow and have a short generation time.
- Distinct Traits: They exhibit clear and easily observable traits, such as flower color and seed shape.
- Controlled Pollination: Mendel could easily control the pollination process, allowing him to perform hybridizations.
Analysis of the Relationship
While both statements are true, the reason does not fully explain why Mendel was successful in his hybridization:
- Multiple Factors: Mendel's success was not solely due to the use of garden peas. His meticulous methods, statistical analysis, and the principles he formulated (like the laws of segregation and independent assortment) were crucial.
- Broader Implications: The choice of garden pea was an important factor, but the broader understanding of genetics and experimental design contributed significantly to his success.
Conclusion
This leads to the conclusion that the correct answer is option 'B':
- Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Mendel's success in hybridization resulted from a combination of his experimental design and the traits of the garden pea, rather than the latter alone.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion: Aerobic animals are not truly aerobic.Reason: They produce lactic acid anaerobically.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Aerobic animals are not truly aerobic.
Reason: They produce lactic acid anaerobically.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Lead Academy answered |
In most animals, tissue oxidation are carried out by aerobic respiration. But sometimes in aerobically respiring animals, anaerobic metabolism take place in certain tissues like skeletal muscles which do not immediately get as much oxygen as in necessary for metabolize glucose during vigorous movements.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: In gel electrophoresis, DNA fragments are separated.
Reason: DNA is negatively charged, so it moves towards anode under electric field.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: In gel electrophoresis, DNA fragments are separated.
Reason: DNA is negatively charged, so it moves towards anode under electric field.
Reason: DNA is negatively charged, so it moves towards anode under electric field.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Ambition Institute answered |
DNA fragments can be isolated with the help of gel electrophoresis, where DNA moves towards the anode (+vely charged).
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The sugar phosphate backbone of two chains in DNA double helix show antiparallel polarity.
Reason: The phosphodiester bonds in one strand go from a 3' carbon of one nucleotide to a 5' carbon of adjacent nucleotide, whereas those in complementary strand go vice versa.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: The sugar phosphate backbone of two chains in DNA double helix show antiparallel polarity.
Reason: The phosphodiester bonds in one strand go from a 3' carbon of one nucleotide to a 5' carbon of adjacent nucleotide, whereas those in complementary strand go vice versa.
Reason: The phosphodiester bonds in one strand go from a 3' carbon of one nucleotide to a 5' carbon of adjacent nucleotide, whereas those in complementary strand go vice versa.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Arjun Chauhan answered |
Assertion and Reason Explanation:
Assertion: The sugar phosphate backbone of two chains in DNA double helix show antiparallel polarity.
Reason: The phosphodiester bonds in one strand go from a 3 carbon of one nucleotide to a 5 carbon of adjacent nucleotide, whereas those in complementary strand go vice versa.
Explanation:
Conclusion: Thus, the statement that the sugar phosphate backbone of two chains in DNA double helix show antiparallel polarity is correct, and the reason provided for this phenomenon is also accurate as it explains the orientation of phosphodiester bonds in the DNA strands. Therefore, option 'A' is the correct choice where both the Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
Assertion: The sugar phosphate backbone of two chains in DNA double helix show antiparallel polarity.
Reason: The phosphodiester bonds in one strand go from a 3 carbon of one nucleotide to a 5 carbon of adjacent nucleotide, whereas those in complementary strand go vice versa.
Explanation:
- The sugar phosphate backbone of DNA consists of alternating sugar (deoxyribose) and phosphate groups.
- In a DNA double helix, the two strands run in opposite directions, which is known as antiparallel polarity.
- The reason for antiparallel polarity is due to the orientation of the sugar phosphate backbone.
- In one DNA strand, the phosphodiester bonds connect the 3' carbon of one nucleotide to the 5' carbon of the adjacent nucleotide.
- In the complementary strand, the phosphodiester bonds are formed in the opposite direction, connecting the 3' carbon of one nucleotide to the 5' carbon of the adjacent nucleotide.
- This antiparallel orientation allows the nitrogenous bases in the two strands to form complementary base pairs, such as A-T and G-C, which are essential for maintaining the double helical structure of DNA.
Conclusion: Thus, the statement that the sugar phosphate backbone of two chains in DNA double helix show antiparallel polarity is correct, and the reason provided for this phenomenon is also accurate as it explains the orientation of phosphodiester bonds in the DNA strands. Therefore, option 'A' is the correct choice where both the Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Adenine cannot pair with cytosine.
Reason: Adenine and cytosine do not have a perfect match between hydrogen donor and hydrogen acceptor sites. Hence, they cannot pair.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Adenine cannot pair with cytosine.
Reason: Adenine and cytosine do not have a perfect match between hydrogen donor and hydrogen acceptor sites. Hence, they cannot pair.
Reason: Adenine and cytosine do not have a perfect match between hydrogen donor and hydrogen acceptor sites. Hence, they cannot pair.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Sneha Datta answered |
Understanding the Assertion and Reason
The assertion states that "Adenine cannot pair with cytosine." This is a fundamental concept in molecular biology and genetics. In DNA, the pairing of nitrogenous bases follows specific rules known as complementary base pairing.
Base Pairing Rules
- Adenine (A) pairs exclusively with Thymine (T) in DNA.
- Cytosine (C) pairs exclusively with Guanine (G).
Thus, adenine and cytosine cannot form stable hydrogen bonds, leading to the conclusion that adenine cannot pair with cytosine.
Reason Explanation
The reason states that "Adenine and cytosine do not have a perfect match between hydrogen donor and hydrogen acceptor sites." This statement is true because:
- Adenine has specific hydrogen bonding capabilities that align with thymine.
- Cytosine has different bonding sites that align with guanine.
This mismatch in hydrogen bonding sites is the reason adenine cannot pair with cytosine.
Conclusion
Both the assertion and the reason are true, and the reason accurately explains why the assertion is correct. Therefore, the correct answer is:
- Option A: If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
This understanding is critical for grasping the fundamentals of DNA structure and function, which are essential for fields such as genetics, molecular biology, and biochemistry.
The assertion states that "Adenine cannot pair with cytosine." This is a fundamental concept in molecular biology and genetics. In DNA, the pairing of nitrogenous bases follows specific rules known as complementary base pairing.
Base Pairing Rules
- Adenine (A) pairs exclusively with Thymine (T) in DNA.
- Cytosine (C) pairs exclusively with Guanine (G).
Thus, adenine and cytosine cannot form stable hydrogen bonds, leading to the conclusion that adenine cannot pair with cytosine.
Reason Explanation
The reason states that "Adenine and cytosine do not have a perfect match between hydrogen donor and hydrogen acceptor sites." This statement is true because:
- Adenine has specific hydrogen bonding capabilities that align with thymine.
- Cytosine has different bonding sites that align with guanine.
This mismatch in hydrogen bonding sites is the reason adenine cannot pair with cytosine.
Conclusion
Both the assertion and the reason are true, and the reason accurately explains why the assertion is correct. Therefore, the correct answer is:
- Option A: If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
This understanding is critical for grasping the fundamentals of DNA structure and function, which are essential for fields such as genetics, molecular biology, and biochemistry.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: In most of the mammals RBCs are devoid of nucleus.Reason: Red colour is filled in the entire cytoplasm of RBC, iron containing complex protein called haemoglobin.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: In most of the mammals RBCs are devoid of nucleus.
Reason: Red colour is filled in the entire cytoplasm of RBC, iron containing complex protein called haemoglobin.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Shanaya Joshi answered |
Understanding the Assertion and Reason
The assertion states that in most mammals, red blood cells (RBCs) are devoid of a nucleus. This is a true statement as mammalian RBCs lose their nucleus during maturation to maximize space for hemoglobin, the oxygen-carrying protein.
Role of Hemoglobin in RBCs
The reason provided explains that the red color in the cytoplasm of RBCs is due to hemoglobin, an iron-containing complex protein. This is also true, as hemoglobin gives RBCs their characteristic red color and is essential for oxygen transport.
Explaining the Relationship
- While both the assertion and reason are true, the reason does not directly explain why mammalian RBCs lack a nucleus.
- The absence of a nucleus in RBCs is primarily an evolutionary adaptation to increase the cell's capacity to carry oxygen, not solely because of the presence of hemoglobin.
Conclusion
Thus, the correct choice is option 'B': both the assertion and reason are true, but the reason is not the correct explanation of the assertion. The statement about hemoglobin being responsible for the lack of a nucleus oversimplifies the physiological adaptations of RBCs in mammals.
The assertion states that in most mammals, red blood cells (RBCs) are devoid of a nucleus. This is a true statement as mammalian RBCs lose their nucleus during maturation to maximize space for hemoglobin, the oxygen-carrying protein.
Role of Hemoglobin in RBCs
The reason provided explains that the red color in the cytoplasm of RBCs is due to hemoglobin, an iron-containing complex protein. This is also true, as hemoglobin gives RBCs their characteristic red color and is essential for oxygen transport.
Explaining the Relationship
- While both the assertion and reason are true, the reason does not directly explain why mammalian RBCs lack a nucleus.
- The absence of a nucleus in RBCs is primarily an evolutionary adaptation to increase the cell's capacity to carry oxygen, not solely because of the presence of hemoglobin.
Conclusion
Thus, the correct choice is option 'B': both the assertion and reason are true, but the reason is not the correct explanation of the assertion. The statement about hemoglobin being responsible for the lack of a nucleus oversimplifies the physiological adaptations of RBCs in mammals.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Restriction endonucleases are also called 'molecular scissors'.
Reason: When fragments generated by restriction endonucleases are mixed, they join together due to their sticky ends.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Restriction endonucleases are also called 'molecular scissors'.
Reason: When fragments generated by restriction endonucleases are mixed, they join together due to their sticky ends.
Reason: When fragments generated by restriction endonucleases are mixed, they join together due to their sticky ends.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Infinity Academy answered |
Restriction endonuclease are molecular scissors, which cut a DNA molecule within certain specific site called restriction site. Common restriction endonucleases are Eco RI, Bam II, Hind III, etc.
Directions: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Exine of a pollen grain is made up of sporopollenins which are resistant to high temperatures, strong acids or alkali as well as enzymatic degradation.
Reason: Sporopollenins are absent in the region of germ pores.- a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c) Assertion (A) is true but reason (R) is false.
- d) Assertion (A) is false but reason (R) is true.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion: Exine of a pollen grain is made up of sporopollenins which are resistant to high temperatures, strong acids or alkali as well as enzymatic degradation.
Reason: Sporopollenins are absent in the region of germ pores.
Reason: Sporopollenins are absent in the region of germ pores.
a)
Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
b)
Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
c)
Assertion (A) is true but reason (R) is false.
d)
Assertion (A) is false but reason (R) is true.
|
|
Ciel Knowledge answered |
Wall of a pollen grain consists of two layers– outer exine and inner intine. Exine is the hard outer layer which is made up of sporopollenin. Sporopollenin is one of the most resistant organic material known. It can withstand high temperature, strong acids or alkali and is not degraded by enzymes. Because of the presence of sporopollenin, pollen grains are well preserved as fossils. At certain places, the exine is thin or absent, these areas may have thickened intine or deposition of callose. They are called germ pores (if rounded) or germinal furrows (if elongated). Sporopollenin is absent in the region of germ pores or germinal furrows.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Beer and wine are called soft liquors while gin, rum, etc. are hard liquors.
Reason: Beer and wine are made without distillation.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Beer and wine are called soft liquors while gin, rum, etc. are hard liquors.
Reason: Beer and wine are made without distillation.
Reason: Beer and wine are made without distillation.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
|
Lead Academy answered |
Beer, wine, gin, rum, vodka, etc. are fermentation products but beer and wine are formed without distillation. However, distillation of fermented broth is carried out in case rum, gin, etc. Distillation increases the alcohol concentration of the beverage. Thus, gin with 40% alcohol, rum with 40% alcohol and brandy with 60-70% alcohol are more alcoholic than beer (3-6% alcohol) and wine (9-12% alcohol).
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion: Substrate level phosphorylation is present in glycolysis.Reason: Substrate level phosphorylation causes synthesis of ATP.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Substrate level phosphorylation is present in glycolysis.
Reason: Substrate level phosphorylation causes synthesis of ATP.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
|
Jay Chaudhary answered |
Understanding Substrate Level Phosphorylation
Substrate level phosphorylation is a crucial biochemical process involved in ATP production during glycolysis. Here's a breakdown of the assertion and reason provided:
Assertion: Substrate level phosphorylation is present in glycolysis.
- This statement is true.
- During glycolysis, ATP is generated through substrate level phosphorylation when a phosphate group is directly transferred to ADP from a phosphorylated intermediate.
Reason: Substrate level phosphorylation causes synthesis of ATP.
- This statement is also true.
- Substrate level phosphorylation specifically refers to the direct addition of a phosphate group to ADP, resulting in the formation of ATP.
Why the Correct Answer is Option B:
- Both the assertion and reason are true.
- However, the reason does not provide a complete or specific explanation for why substrate level phosphorylation is present in glycolysis. The assertion stands on its own without needing the reason to clarify it.
Implications of the Statements:
- Substrate level phosphorylation occurs at specific steps within glycolysis, primarily during the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate and phosphoenolpyruvate to pyruvate.
- The ATP produced via this mechanism is essential for cellular energy needs, highlighting the importance of glycolysis in metabolic pathways.
Conclusion:
Thus, the correct interpretation is that while both statements are true, the reason does not adequately explain the assertion, leading to the conclusion that the answer should be option 'B'.
Substrate level phosphorylation is a crucial biochemical process involved in ATP production during glycolysis. Here's a breakdown of the assertion and reason provided:
Assertion: Substrate level phosphorylation is present in glycolysis.
- This statement is true.
- During glycolysis, ATP is generated through substrate level phosphorylation when a phosphate group is directly transferred to ADP from a phosphorylated intermediate.
Reason: Substrate level phosphorylation causes synthesis of ATP.
- This statement is also true.
- Substrate level phosphorylation specifically refers to the direct addition of a phosphate group to ADP, resulting in the formation of ATP.
Why the Correct Answer is Option B:
- Both the assertion and reason are true.
- However, the reason does not provide a complete or specific explanation for why substrate level phosphorylation is present in glycolysis. The assertion stands on its own without needing the reason to clarify it.
Implications of the Statements:
- Substrate level phosphorylation occurs at specific steps within glycolysis, primarily during the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate and phosphoenolpyruvate to pyruvate.
- The ATP produced via this mechanism is essential for cellular energy needs, highlighting the importance of glycolysis in metabolic pathways.
Conclusion:
Thus, the correct interpretation is that while both statements are true, the reason does not adequately explain the assertion, leading to the conclusion that the answer should be option 'B'.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Gram-negative bacteria do not retain the stain when washed with alcohol.Reason: The outer face of the outer membrane of gram-negative bacteria contains lipopolysaccharides, a part of which is integrated into the membrane lipids.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Gram-negative bacteria do not retain the stain when washed with alcohol.
Reason: The outer face of the outer membrane of gram-negative bacteria contains lipopolysaccharides, a part of which is integrated into the membrane lipids.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
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Stepway Academy answered |
Gram negative bacteria contain lipopolysaccharide in its membrane.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: DNA is associated with proteins.
Reason: DNA binds around histone proteins that form a pool and the entire structure is called a nucleosome.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: DNA is associated with proteins.
Reason: DNA binds around histone proteins that form a pool and the entire structure is called a nucleosome.
Reason: DNA binds around histone proteins that form a pool and the entire structure is called a nucleosome.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
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Top Rankers answered |
A chain of DNA has 140 base pairs, make 1 3/4 turns and twist around a histone octamer forming nucleosome. The core of nucleosome consists of 4 histones H2A, H2B, H3 and H4.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Biogas is used as fuel for cooking and lighting.
Reason: It is considered as eco friendly and pollution free source of energy.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Biogas is used as fuel for cooking and lighting.
Reason: It is considered as eco friendly and pollution free source of energy.
Reason: It is considered as eco friendly and pollution free source of energy.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
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Simran Sengupta answered |
Understanding the Assertion and Reason
In the given question, we analyze two statements:
- Assertion: Biogas is used as fuel for cooking and lighting.
- Reason: It is considered as eco-friendly and pollution-free source of energy.
Evaluation of the Assertion
- True Statement: Biogas is indeed used widely for cooking and lighting purposes. It is generated from organic matter like agricultural waste, animal dung, and kitchen waste, making it a practical energy source in many households.
Evaluation of the Reason
- True Statement: Biogas is recognized as an eco-friendly and pollution-free source of energy since it produces fewer emissions compared to fossil fuels and utilizes waste materials effectively.
Relationship Between Assertion and Reason
- Explanation Needed: While both statements are true, the reason does not directly explain the assertion. The reason highlights the environmental benefits of biogas, but it does not clarify why it is specifically used for cooking and lighting. The use of biogas as fuel stems from its availability, efficiency, and sustainability rather than solely from its eco-friendly nature.
Conclusion
- Correct Choice: Thus, the correct option is (b) because both the assertion and reason are true, but the reason does not serve as the correct explanation for the assertion.
This distinction is crucial in understanding the context of statements in scientific discussions, especially for exams like NEET.
In the given question, we analyze two statements:
- Assertion: Biogas is used as fuel for cooking and lighting.
- Reason: It is considered as eco-friendly and pollution-free source of energy.
Evaluation of the Assertion
- True Statement: Biogas is indeed used widely for cooking and lighting purposes. It is generated from organic matter like agricultural waste, animal dung, and kitchen waste, making it a practical energy source in many households.
Evaluation of the Reason
- True Statement: Biogas is recognized as an eco-friendly and pollution-free source of energy since it produces fewer emissions compared to fossil fuels and utilizes waste materials effectively.
Relationship Between Assertion and Reason
- Explanation Needed: While both statements are true, the reason does not directly explain the assertion. The reason highlights the environmental benefits of biogas, but it does not clarify why it is specifically used for cooking and lighting. The use of biogas as fuel stems from its availability, efficiency, and sustainability rather than solely from its eco-friendly nature.
Conclusion
- Correct Choice: Thus, the correct option is (b) because both the assertion and reason are true, but the reason does not serve as the correct explanation for the assertion.
This distinction is crucial in understanding the context of statements in scientific discussions, especially for exams like NEET.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Paroxysms are regular and daily in Quotidian malaria.Reason: Recurrence of fever is after 48 hours if the infection is caused by Plasmodium malariae.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'D'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Paroxysms are regular and daily in Quotidian malaria.
Reason: Recurrence of fever is after 48 hours if the infection is caused by Plasmodium malariae.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
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Infinity Academy answered |
Paroxysm a sudden attack or outburst of a particular emotion or activity. Quotidian malaria in which the febrile paroxysms occur daily. In P. malariae infection, the relapse occurs once every 72 hours and it is called Quartan malaria.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion: Collenchyma forms the hypodermis of dicotyledon stems.Reason: This is the reason for flexibility of dicotyledonous stems.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Collenchyma forms the hypodermis of dicotyledon stems.
Reason: This is the reason for flexibility of dicotyledonous stems.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
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Imk Pathsala answered |
Collenchyma cells are elongated cells with irregularly thick cell walls that provide support and structure. Their thick cell walls are composed of the compounds cellulose and pectin. These cells are often found under the epidermis, or the outer layer of cells in young stems and in leaf veins.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Both at the root apex and the shoot apex, the constantly dividing cells show the meristematic phase of growth.Reason: The cells of this region are rich in protoplasm and lacks nuclei.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Both at the root apex and the shoot apex, the constantly dividing cells show the meristematic phase of growth.
Reason: The cells of this region are rich in protoplasm and lacks nuclei.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
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Ishita Joshi answered |
Explanation:
Assertion:
- The assertion states that both at the root apex and the shoot apex, the constantly dividing cells show the meristematic phase of growth.
Reason:
- The reason provided is that the cells of this region are rich in protoplasm and lack nuclei.
Explanation of the Correct Answer:
- The correct answer is option 'C' which states that the Assertion is true but the Reason is false.
- The reason provided in the statement is incorrect as the cells in the meristematic region are actually rich in protoplasm and do contain nuclei.
- Meristematic cells are known for their high protoplasm content and actively dividing nature to support growth in plants.
- These cells are responsible for primary and secondary growth in plants and play a crucial role in plant development.
- Therefore, while the assertion regarding the presence of meristematic cells at the root apex and shoot apex is true, the reason given to explain this phenomenon is incorrect.
Assertion:
- The assertion states that both at the root apex and the shoot apex, the constantly dividing cells show the meristematic phase of growth.
Reason:
- The reason provided is that the cells of this region are rich in protoplasm and lack nuclei.
Explanation of the Correct Answer:
- The correct answer is option 'C' which states that the Assertion is true but the Reason is false.
- The reason provided in the statement is incorrect as the cells in the meristematic region are actually rich in protoplasm and do contain nuclei.
- Meristematic cells are known for their high protoplasm content and actively dividing nature to support growth in plants.
- These cells are responsible for primary and secondary growth in plants and play a crucial role in plant development.
- Therefore, while the assertion regarding the presence of meristematic cells at the root apex and shoot apex is true, the reason given to explain this phenomenon is incorrect.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : Biceps and triceps are called antagonistic muscles.Reason : This is due to the fact that they contract and relax together.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : Biceps and triceps are called antagonistic muscles.
Reason : This is due to the fact that they contract and relax together.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
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Lead Academy answered |
Antagonistic muscles are those muscles which contract to produce opposite movements at the same joint. When a muscle contracts to produce a movement, its antagonist must relax to allow that movement to take place. Biceps and triceps are called antagonistic muscles. Because during flexion at the elbow, biceps contracts and triceps relaxes; during extension at the same joint, triceps contract and biceps relax.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: Transgenic plant is a product of plant tissue culture.
Reason: An organism that contains and expresses a transgenic organism.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Transgenic plant is a product of plant tissue culture.
Reason: An organism that contains and expresses a transgenic organism.
Reason: An organism that contains and expresses a transgenic organism.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
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Bs Academy answered |
Plant tissue culture has various applications in the different fields of biology. An example of this is the production of transgenic plants and animals. Transgenic organisms contain genes, which are transferred into them through the genetic engineering. These genes are known as transgenic.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: DNA is considered to be better genetic material than RNA for most organisms.
Reason: 2'-OH group present in DNA makes it labile and less reactive.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: DNA is considered to be better genetic material than RNA for most organisms.
Reason: 2'-OH group present in DNA makes it labile and less reactive.
Reason: 2'-OH group present in DNA makes it labile and less reactive.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
If Assertion is true but Reason is false.
d)
If both Assertion and Reason are false.
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Avantika Chavan answered |
Assertion Explanation
The assertion states that "DNA is considered to be better genetic material than RNA for most organisms." This is true because:
- DNA is more stable due to its double-stranded structure.
- It is less prone to chemical degradation, making it a reliable carrier of genetic information.
- The stability of DNA allows it to serve as a long-term storage medium for genetic information in cells.
Reason Explanation
The reason provided is that "the 2-OH group present in DNA makes it labile and less reactive." This statement is false because:
- The 2-OH (hydroxyl) group is found in RNA, not DNA; DNA has a 2-deoxyribose sugar, which lacks this hydroxyl group.
- The presence of the 2-OH group in RNA contributes to its reactivity, making RNA more prone to hydrolysis and degradation compared to DNA.
- Therefore, it's the lack of the 2-OH group in DNA that contributes to its stability as genetic material.
Conclusion
Based on the explanations:
- The assertion is true as DNA is indeed the more stable genetic material for most organisms.
- The reason is false since the 2-OH group is not present in DNA and does not contribute to its lability or reactivity.
Thus, the correct answer is option 'C': If Assertion is true but Reason is false.
The assertion states that "DNA is considered to be better genetic material than RNA for most organisms." This is true because:
- DNA is more stable due to its double-stranded structure.
- It is less prone to chemical degradation, making it a reliable carrier of genetic information.
- The stability of DNA allows it to serve as a long-term storage medium for genetic information in cells.
Reason Explanation
The reason provided is that "the 2-OH group present in DNA makes it labile and less reactive." This statement is false because:
- The 2-OH (hydroxyl) group is found in RNA, not DNA; DNA has a 2-deoxyribose sugar, which lacks this hydroxyl group.
- The presence of the 2-OH group in RNA contributes to its reactivity, making RNA more prone to hydrolysis and degradation compared to DNA.
- Therefore, it's the lack of the 2-OH group in DNA that contributes to its stability as genetic material.
Conclusion
Based on the explanations:
- The assertion is true as DNA is indeed the more stable genetic material for most organisms.
- The reason is false since the 2-OH group is not present in DNA and does not contribute to its lability or reactivity.
Thus, the correct answer is option 'C': If Assertion is true but Reason is false.
Chapter doubts & questions for March - Daily Test for NEET Preparation 2025 is part of NEET exam preparation. The chapters have been prepared according to the NEET exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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Daily Test for NEET Preparation
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