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Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one
of these compounds, but not by the other ?- a)is used as a food-preservative
- b)forms 'acid-rain‘
- c)is a reducing agent
- d)is soluble in water
Correct answer is option 'A'. Can you explain this answer?
Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one
of these compounds, but not by the other ?
of these compounds, but not by the other ?
a)
is used as a food-preservative
b)
forms 'acid-rain‘
c)
is a reducing agent
d)
is soluble in water
|
Meera Singh answered |
SO2 is used as a food-preservative. It is an antioxidant.
NO2 is not used as food preservative.
In Bougainvillea thorns are the modifications of :- a)Adventitious root
- b)Stem
- c)Leaf
- d)Stipules
Correct answer is option 'B'. Can you explain this answer?
In Bougainvillea thorns are the modifications of :
a)
Adventitious root
b)
Stem
c)
Leaf
d)
Stipules
|
|
Kadambala Hemalatha answered |
Option B is correct, aerial stem of bougainvillea, citrus modifide into thorns for the protection from grazing animals...
Select the correctly written scientific name of Mango which was first described by Carolus Linnaeus- a)Mangifera indica Car. Linn.
- b)Mangifera indica Linn.
- c)Mangifera indica
- d)Mangifera Indica
Correct answer is option 'B'. Can you explain this answer?
Select the correctly written scientific name of Mango which was first described by Carolus Linnaeus
a)
Mangifera indica Car. Linn.
b)
Mangifera indica Linn.
c)
Mangifera indica
d)
Mangifera Indica
|
Dipanjan Mehta answered |
According to rules of binomial nomenclature, correctly written scientific name of mango is Mangifera indica Linn.
The taq polymerase enzyme is obtained from :- a)Pseudomonas putida
- b)Thermus aquaticus
- c)Thiobacillus ferroxidans
- d)Bacillus subtilis
Correct answer is option 'B'. Can you explain this answer?
The taq polymerase enzyme is obtained from :
a)
Pseudomonas putida
b)
Thermus aquaticus
c)
Thiobacillus ferroxidans
d)
Bacillus subtilis
|
|
Jaspreet answered |
The taq polymerase enzyme is obtained from "Thermus aquaticus"
:)
:)
A baby boy aged two years is admitted to playschool and passes through a dental check - up. Thedentist observed that the boy had twenty teeth.Which teeth were absent?- a)Canines
- b)Pre-molars
- c)Molars
- d)Incisors
Correct answer is option 'A'. Can you explain this answer?
A baby boy aged two years is admitted to playschool and passes through a dental check - up. Thedentist observed that the boy had twenty teeth.Which teeth were absent?
a)
Canines
b)
Pre-molars
c)
Molars
d)
Incisors
|
Manisha Kulkarni answered |
Explanation:
MALT constitutes about ________ percent of thelymphoid tissue in human body.- a)20%
- b)70%
- c)10%
- d)50%
Correct answer is option 'D'. Can you explain this answer?
MALT constitutes about ________ percent of thelymphoid tissue in human body.
a)
20%
b)
70%
c)
10%
d)
50%
|
Janhavi Desai answered |
Explanation:
MALT stands for Mucosa-Associated Lymphoid Tissue. It is a type of lymphoid tissue that is found in the mucous membranes of various organs such as the gastrointestinal tract, respiratory tract, and urogenital tract. MALT is responsible for immune responses against foreign particles and pathogens that enter the body through these membranes.
Percentage of MALT in the lymphoid tissue:
MALT constitutes about 50% of the lymphoid tissue in the human body. This means that half of the body's lymphoid tissue is located in the mucous membranes.
Importance of MALT:
MALT is important for protecting the body from infections and diseases. It contains various types of immune cells such as B cells, T cells, and macrophages that are responsible for identifying and eliminating foreign particles and pathogens that enter the body through the mucous membranes. MALT also plays a crucial role in the development of tolerance to harmless antigens such as food particles.
Diseases associated with MALT:
Diseases associated with MALT include lymphoma, which is a type of cancer that affects the lymphoid tissue. MALT lymphoma is a type of lymphoma that arises from MALT and is often associated with chronic infections such as Helicobacter pylori infection in the stomach.
In conclusion, MALT is an important component of the lymphoid tissue in the human body. It is responsible for immune responses against foreign particles and pathogens that enter the body through the mucous membranes. MALT constitutes about 50% of the lymphoid tissue in the human body and plays a crucial role in protecting the body from infections and diseases.
MALT stands for Mucosa-Associated Lymphoid Tissue. It is a type of lymphoid tissue that is found in the mucous membranes of various organs such as the gastrointestinal tract, respiratory tract, and urogenital tract. MALT is responsible for immune responses against foreign particles and pathogens that enter the body through these membranes.
Percentage of MALT in the lymphoid tissue:
MALT constitutes about 50% of the lymphoid tissue in the human body. This means that half of the body's lymphoid tissue is located in the mucous membranes.
Importance of MALT:
MALT is important for protecting the body from infections and diseases. It contains various types of immune cells such as B cells, T cells, and macrophages that are responsible for identifying and eliminating foreign particles and pathogens that enter the body through the mucous membranes. MALT also plays a crucial role in the development of tolerance to harmless antigens such as food particles.
Diseases associated with MALT:
Diseases associated with MALT include lymphoma, which is a type of cancer that affects the lymphoid tissue. MALT lymphoma is a type of lymphoma that arises from MALT and is often associated with chronic infections such as Helicobacter pylori infection in the stomach.
In conclusion, MALT is an important component of the lymphoid tissue in the human body. It is responsible for immune responses against foreign particles and pathogens that enter the body through the mucous membranes. MALT constitutes about 50% of the lymphoid tissue in the human body and plays a crucial role in protecting the body from infections and diseases.
The concept of “ Omnis cellula-e cellula ” regarding cell division was first proposed by- a)Rudolf Virchow
- b)Theodor Schwann
- c)Schleiden
- d)Aristotle
Correct answer is option 'A'. Can you explain this answer?
The concept of “ Omnis cellula-e cellula ” regarding cell division was first proposed by
a)
Rudolf Virchow
b)
Theodor Schwann
c)
Schleiden
d)
Aristotle
|
Swara Desai answered |
Concept of “Omnis cellula-e cellula” regarding cell division was proposed by Rudolph Virchow.
Select the correct sequence for transport of sperm cells in male reproductive system.- a)Testis → Epididymis → Vasa efferentia → Rete testis → Inguinal canal → Urethra
- b)Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus
- c)Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra
- d)Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → Urethral meatus
Correct answer is option 'B'. Can you explain this answer?
Select the correct sequence for transport of sperm cells in male reproductive system.
a)
Testis → Epididymis → Vasa efferentia → Rete testis → Inguinal canal → Urethra
b)
Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus
c)
Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra
d)
Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → Urethral meatus
|
Rohan Unni answered |
The correct sequence for transport of sperm cells in male reproductive system is Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus
Which of the following terms describe human dentition ?- a)Thecodont, Diphyodont, Homodont
- b)Thecodont, Diphyodont, Heterodont
- c)Pleurodont, Monophyodont, Homodont
- d)Pleurodont, Diphyodont, Heterodont
Correct answer is option 'B'. Can you explain this answer?
Which of the following terms describe human dentition ?
a)
Thecodont, Diphyodont, Homodont
b)
Thecodont, Diphyodont, Heterodont
c)
Pleurodont, Monophyodont, Homodont
d)
Pleurodont, Diphyodont, Heterodont
|
|
Inturi Ganesh answered |
Human teeth are thecodont since they are embedded in the sockets of jaw bone. diphiodont since teeth of human appear two times in a life time (milk teeth,permanent teeth). heterodont since human teeth are of different shapes and have different functions.so correct answer is B
α-particle consists of :- a)2 protons and 2 neutrons only
- b)2 electrons, 2 protons and 2 neutrons
- c)2 electrons and 4 protons only
- d)2 protons only
Correct answer is option 'A'. Can you explain this answer?
α-particle consists of :
a)
2 protons and 2 neutrons only
b)
2 electrons, 2 protons and 2 neutrons
c)
2 electrons and 4 protons only
d)
2 protons only
|
|
Sathvika Tadri answered |
Alpha particle consists of 2 protons and 2 neutrons only....option A
In case of a couple where the male is having a verylow sperm count, which technique will be suitablefor fertilisation ?- a)Gamete intracytoplasmic fallopian transfer
- b)Artificial Insemination
- c)Intracytoplasmic sperm injection
- d)Intrauterine transfer
Correct answer is option 'B'. Can you explain this answer?
In case of a couple where the male is having a verylow sperm count, which technique will be suitablefor fertilisation ?
a)
Gamete intracytoplasmic fallopian transfer
b)
Artificial Insemination
c)
Intracytoplasmic sperm injection
d)
Intrauterine transfer
|
|
Lekhana Licchi answered |
Yes option 'C' is the correct✔️ answer... Artificial insemination is a Medical procedure of injecting a semen into female reproductive tract (vagina or uterus). This technique is used when the male🧔has very low⬇️ sperm count.
Which of the following is not an attribute of a population?- a)Mortality
- b)Species interaction
- c)Sex ratio
- d)Natality
Correct answer is option 'B'. Can you explain this answer?
Which of the following is not an attribute of a population?
a)
Mortality
b)
Species interaction
c)
Sex ratio
d)
Natality
|
|
Amar Dasgupta answered |
Attributes of a Population
A population refers to a group of individuals of the same species living in a particular area at a specific time. The attributes of a population are the characteristics or features that describe the population. The following are the attributes of a population:
1. Mortality: Mortality refers to the death rate of individuals in a population. It is an important attribute because it determines the size of the population.
2. Sex Ratio: Sex ratio refers to the proportion of males to females in a population. It is an essential attribute because it affects the reproductive potential of the population.
3. Natality: Natality refers to the birth rate of individuals in a population. It is an important attribute because it determines the growth rate of the population.
Why Species Interaction is not an Attribute of a Population
Species interaction refers to the interactions between different species in an ecosystem. It is not an attribute of a population because it involves interactions between populations rather than characteristics of a single population. Species interaction is an important aspect of ecology, but it is not a feature that can be used to describe a single population.
A population refers to a group of individuals of the same species living in a particular area at a specific time. The attributes of a population are the characteristics or features that describe the population. The following are the attributes of a population:
1. Mortality: Mortality refers to the death rate of individuals in a population. It is an important attribute because it determines the size of the population.
2. Sex Ratio: Sex ratio refers to the proportion of males to females in a population. It is an essential attribute because it affects the reproductive potential of the population.
3. Natality: Natality refers to the birth rate of individuals in a population. It is an important attribute because it determines the growth rate of the population.
Why Species Interaction is not an Attribute of a Population
Species interaction refers to the interactions between different species in an ecosystem. It is not an attribute of a population because it involves interactions between populations rather than characteristics of a single population. Species interaction is an important aspect of ecology, but it is not a feature that can be used to describe a single population.
Which colour of the light has the longest wavelength?- a)Red
- b)Blue
- c)Green
- d)Violet
Correct answer is option 'A'. Can you explain this answer?
Which colour of the light has the longest wavelength?
a)
Red
b)
Blue
c)
Green
d)
Violet
|
Nilotpal Gupta answered |
Red has the longest wavelength among the given options.
During DNA replication, Okazaki fragments areused to elongate:- a)The lagging strand towards replication fork.
- b)The leading strand away from replication fork.
- c)The lagging strand away from the replicationfork.
- d)The leading strand towards replication fork.
Correct answer is option 'C'. Can you explain this answer?
During DNA replication, Okazaki fragments areused to elongate:
a)
The lagging strand towards replication fork.
b)
The leading strand away from replication fork.
c)
The lagging strand away from the replicationfork.
d)
The leading strand towards replication fork.
|
|
Anwesha Pati answered |
B.&C
Which of the following reactions are disproportionation reaction?
(a) 2Cu+ → Cu2++ Cu0
(b) 
(c) 
(d) 
Select the correct option from the following- a)(a) and (b) only
- b)(a), (b) and (c)
- c)(a), (c) and (d)
- d)(a) and (d) only
Correct answer is option 'A'. Can you explain this answer?
Which of the following reactions are disproportionation reaction?
(a) 2Cu+ → Cu2++ Cu0
(b)
(c)
(d)
(a) 2Cu+ → Cu2++ Cu0
(b)
(c)
(d)
Select the correct option from the following
a)
(a) and (b) only
b)
(a), (b) and (c)
c)
(a), (c) and (d)
d)
(a) and (d) only
|
Ananya Das answered |
Disproportionation
Disproportionation
∴ Not a disproportionation
Can you explain the answer of this question below:The ratio of resolving powers of an opticalmicroscope for two wavelengths λ1 = 4000 Å and λ2 = 6000 Å is :-
- A:
9 : 4
- B:
3 : 2
- C:
16 : 81
- D:
8 : 27
The answer is b.
The ratio of resolving powers of an opticalmicroscope for two wavelengths λ1 = 4000 Å and λ2 = 6000 Å is :-
9 : 4
3 : 2
16 : 81
8 : 27
|
Sarthak Rajendra Bande answered |
Resolving Power (R)=a/1.22(lambda) R is inversely proportional to lambda R1/R2=6000/4000 =3/2
Cell in G0 phase :- a)exit the cell cycle
- b)enter the cell cycle
- c)suspend the cell cycle
- d)terminate the cell cycle
Correct answer is option 'A'. Can you explain this answer?
Cell in G0 phase :
a)
exit the cell cycle
b)
enter the cell cycle
c)
suspend the cell cycle
d)
terminate the cell cycle
|
Shalini Saha answered |
Cells in G0 phase are said to exit cell cycle.
These are at quiescent stage and do not proliferate unless called upon to do so.
These are at quiescent stage and do not proliferate unless called upon to do so.
Which of the following organic compounds polymerizes to form the polyester Dacron?- a)Terephthalic acid and ethylene glycol
- b)Benzoic acid and para HO − ( C6H4 ) − OH
- c)Propylene and para HO − ( C6H4 ) − OH
- d)Benzoic acid and ethanol
Correct answer is option 'A'. Can you explain this answer?
Which of the following organic compounds polymerizes to form the polyester Dacron?
a)
Terephthalic acid and ethylene glycol
b)
Benzoic acid and para HO − ( C6H4 ) − OH
c)
Propylene and para HO − ( C6H4 ) − OH
d)
Benzoic acid and ethanol
|
|
Moushumi Roy answered |
A
Conversion of milk to curd improves its nutritional value by increasing the amount of- a)Vitamin D
- b)Vitamin A
- c)Vitamin B12
- d)Vitamin E
Correct answer is option 'C'. Can you explain this answer?
Conversion of milk to curd improves its nutritional value by increasing the amount of
a)
Vitamin D
b)
Vitamin A
c)
Vitamin B12
d)
Vitamin E
|
|
Kadambala Hemalatha answered |
Option C is correct, vitamin B12 (Sayanocobalamin) converts milk to curd and it improves it's nutritional value...
Which among the following is not a prokaryote ?- a)Saccharomyces
- b)Mycobacterium
- c)Nostoc
- d)Oscillatoria
Correct answer is option 'A'. Can you explain this answer?
Which among the following is not a prokaryote ?
a)
Saccharomyces
b)
Mycobacterium
c)
Nostoc
d)
Oscillatoria
|
|
Suresh Kumar answered |
Saccharomyces->yeast .Its the only unicellular eukaryote belonging to the kingdom Fungi...So;option A is true...Whereas;Mycobacterium->belongs to Actinomycetes i.e. of kingdom Monera & we know that monera includes prokaryotes....Nostoc & Oscillatoria-> belongs to BGA(blue green algae (or) cyanobacteria.)i.e. of kingdom Monera ...
What is the direction of movement of sugars in phloem?- a)Non-multidirectional
- b)Upward
- c)Downward
- d)Bi-directional
Correct answer is option 'D'. Can you explain this answer?
What is the direction of movement of sugars in phloem?
a)
Non-multidirectional
b)
Upward
c)
Downward
d)
Bi-directional
|
Charvi Shah answered |
The direction of movement of sugar in phloem is bi-directional as it depends on source-sink relationship which is variable in plants.
The number of d-electrons in Fe2+ (Z = 26) is not equal to the number of electrons in which one of the
following ?- a)p - electrons in Ne (Z = 10)
- b)s - electrons in Mg (Z = 12)
- c)p - electrons in Cl (Z = 17)
- d)d - electrons in Fe (Z = 26)
Correct answer is option 'C'. Can you explain this answer?
The number of d-electrons in Fe2+ (Z = 26) is not equal to the number of electrons in which one of the
following ?
following ?
a)
p - electrons in Ne (Z = 10)
b)
s - electrons in Mg (Z = 12)
c)
p - electrons in Cl (Z = 17)
d)
d - electrons in Fe (Z = 26)
|
|
Ritu Singh answered |
Capacitation occurs in :- a)Epididymis
- b)Vas deferens
- c)Female reproductive tract
- d)Rete testis
Correct answer is option 'C'. Can you explain this answer?
Capacitation occurs in :
a)
Epididymis
b)
Vas deferens
c)
Female reproductive tract
d)
Rete testis
|
|
Shatabdi Malik answered |
Capacitation refers to the physiological changes spermatozoa must undergo in order to have the ability to penetrate and fertilize an egg. It take place in female reproductive tract so option C is correct.
Which of the following represents order of'Horse' ?- a)Perissodactyla
- b)Caballus
- c)Ferus
- d)Equidae
Correct answer is option 'A'. Can you explain this answer?
Which of the following represents order of'Horse' ?
a)
Perissodactyla
b)
Caballus
c)
Ferus
d)
Equidae
|
|
Sonal Menon answered |
Order of Horse: Perissodactyla
Explanation:
- Perissodactyla is an order of hoofed mammals that includes horses, zebras, donkeys, and tapirs.
- Horses belong to the family Equidae, which is a part of the order Perissodactyla.
- Caballus and Ferus are both species names for the domesticated horse and wild horse, respectively.
- Equidae is the family that includes horses, zebras, and donkeys, but it is not the order to which they belong.
Therefore, the correct answer is option 'A', Perissodactyla.
Explanation:
- Perissodactyla is an order of hoofed mammals that includes horses, zebras, donkeys, and tapirs.
- Horses belong to the family Equidae, which is a part of the order Perissodactyla.
- Caballus and Ferus are both species names for the domesticated horse and wild horse, respectively.
- Equidae is the family that includes horses, zebras, and donkeys, but it is not the order to which they belong.
Therefore, the correct answer is option 'A', Perissodactyla.
Which structures perform the function of mitochondria in bacteria?- a)Cell wall
- b)Mesosomes
- c)Nucleoid
- d)Ribosomes
Correct answer is option 'B'. Can you explain this answer?
Which structures perform the function of mitochondria in bacteria?
a)
Cell wall
b)
Mesosomes
c)
Nucleoid
d)
Ribosomes
|
|
Kadambala Hemalatha answered |
Misosomes helps in respiration as well as secretion in prokaryotic organisams.
Be2+ is isoelectronic with which of the following ions ?- a)Na+
- b)Mg2+
- c)H+
- d)Li+
Correct answer is option 'D'. Can you explain this answer?
Be2+ is isoelectronic with which of the following ions ?
a)
Na+
b)
Mg2+
c)
H+
d)
Li+
|
Anushka Das answered |
Explanation:
Be2 is an ion that has lost two electrons, making it positively charged. To determine which ion it is isoelectronic with, we need to find other ions that have the same number of electrons.
- Na (Sodium ion) has 11 electrons, which is different from Be2.
- Mg2 (Magnesium ion) has 10 electrons, which is also different from Be2.
- H (Hydrogen ion) has only one electron, which is very different from Be2.
- Li (Lithium ion) has 3 electrons, which is the same as Be2.
Therefore, Be2 is isoelectronic with Li (Lithium ion).
HTML bullet points:
- Be2 is positively charged ion that has lost two electrons.
- Isoelectronic ions have the same number of electrons.
- Na has 11 electrons, which is different from Be2.
- Mg2 has 10 electrons, which is also different from Be2.
- H has only one electron, which is very different from Be2.
- Li has 3 electrons, which is the same as Be2.
- Therefore, Be2 is isoelectronic with Li.
Be2 is an ion that has lost two electrons, making it positively charged. To determine which ion it is isoelectronic with, we need to find other ions that have the same number of electrons.
- Na (Sodium ion) has 11 electrons, which is different from Be2.
- Mg2 (Magnesium ion) has 10 electrons, which is also different from Be2.
- H (Hydrogen ion) has only one electron, which is very different from Be2.
- Li (Lithium ion) has 3 electrons, which is the same as Be2.
Therefore, Be2 is isoelectronic with Li (Lithium ion).
HTML bullet points:
- Be2 is positively charged ion that has lost two electrons.
- Isoelectronic ions have the same number of electrons.
- Na has 11 electrons, which is different from Be2.
- Mg2 has 10 electrons, which is also different from Be2.
- H has only one electron, which is very different from Be2.
- Li has 3 electrons, which is the same as Be2.
- Therefore, Be2 is isoelectronic with Li.
Which is the particular type of drug that is obtained from the plant whose one flowering
branch is shown below?
- a)Stimulant
- b)Pain−killer
- c)Hallucinogen
- d)Depressant
Correct answer is option 'C'. Can you explain this answer?
Which is the particular type of drug that is obtained from the plant whose one flowering
branch is shown below?
branch is shown below?
a)
Stimulant
b)
Pain−killer
c)
Hallucinogen
d)
Depressant
|
|
Divyanshu Dhangar answered |
Because the given diagram is of datura plant and the that is obtained from this plant are hallucinogenic which causes imagination effect on our nervous system.
Thalassemia and sickle cell anemia are caused dueto a problem in globin molecule synthesis. Selectthe correct statement :- a)Both are due to a quantitative defect in globinchain synthesis
- b)Thalassemia is due to less synthesis of globinmolecules
- c)Sickel cell anemia is due to a quantitativeproblem of globin molecules
- d)Both are due to a qualitative defect in globinchain synthesis
Correct answer is option 'B'. Can you explain this answer?
Thalassemia and sickle cell anemia are caused dueto a problem in globin molecule synthesis. Selectthe correct statement :
a)
Both are due to a quantitative defect in globinchain synthesis
b)
Thalassemia is due to less synthesis of globinmolecules
c)
Sickel cell anemia is due to a quantitativeproblem of globin molecules
d)
Both are due to a qualitative defect in globinchain synthesis
|
Shyamal Modak. answered |
Thalassemia is a quantitative defect whereas sickle cell anaemia is a qualitative defect.Becaause sickel cell anaemia is caused by the substitution of Glu by val at the 6th position of beta globin chain,whereas Thalassemia is due to the reduced rate of synthesis of any pf the globin chains.Hence correct option is B
Which of the following characteristic features always holds true for the corresponding group of animals?
- a)3-chambered heart with one incompletely divided ventricle --- Reptilia
- b)Cartilaginous endoskeleton --- Chondrichthyes
- c)Viviparous --- Mammalia
- d)Possess a mouth with an upper and lower jaw --- Chordata
Correct answer is option 'B'. Can you explain this answer?
Which of the following characteristic features always holds true for the corresponding group of animals?
a)
3-chambered heart with one incompletely divided ventricle --- Reptilia
b)
Cartilaginous endoskeleton --- Chondrichthyes
c)
Viviparous --- Mammalia
d)
Possess a mouth with an upper and lower jaw --- Chordata
|
|
Rocky Handsome answered |
---)¥ Chondrichthyes has endoskeleton made up of cartilage.
---€All Mammals are Viviparous except platypus which is Oviparous.
---->All Chordates posses a mouth with an upper and a lower jaw except agnatha which are without jaws.
•••••》All reptiles have 3 - chambered heart except crocodile and tortoise in which heart is four chambered but with an incomplete wall in the single ventricle, so their hearts are functionally 4 chambered.
Sweet potato is a modified- a)Stem
- b)Adventitious root
- c)Tap root
- d)Rhizome
Correct answer is option 'B'. Can you explain this answer?
Sweet potato is a modified
a)
Stem
b)
Adventitious root
c)
Tap root
d)
Rhizome
|
|
Meghana Dey answered |
Modified Adventitious Root - Sweet Potato
Sweet potato is a popular root vegetable that is native to South America. It is a modified adventitious root that is often confused with a tuber. Adventitious roots are roots that develop from any part of the plant other than the radicle or root meristem. In the case of sweet potato, these roots develop from the stem and are modified to store food.
Structure of Sweet Potato
The sweet potato plant has a vine-like stem that grows along the ground. From this stem, adventitious roots grow, which are thick and fleshy. These roots are modified to store starch and other nutrients. They are long and cylindrical, with a tapered end. The skin is reddish-brown, and the flesh is orange or yellow.
Function of Sweet Potato
The adventitious roots of sweet potato are modified to store food. They contain large amounts of starch and other nutrients, which make sweet potatoes a popular food source. The presence of these modified roots also makes sweet potatoes an important crop for farmers. They are easy to cultivate and have a long shelf life.
Conclusion
In conclusion, sweet potato is a modified adventitious root that is an important food crop. The roots are modified to store food and are easy to cultivate. They are long, cylindrical, and tapered with reddish-brown skin and orange or yellow flesh.
Sweet potato is a popular root vegetable that is native to South America. It is a modified adventitious root that is often confused with a tuber. Adventitious roots are roots that develop from any part of the plant other than the radicle or root meristem. In the case of sweet potato, these roots develop from the stem and are modified to store food.
Structure of Sweet Potato
The sweet potato plant has a vine-like stem that grows along the ground. From this stem, adventitious roots grow, which are thick and fleshy. These roots are modified to store starch and other nutrients. They are long and cylindrical, with a tapered end. The skin is reddish-brown, and the flesh is orange or yellow.
Function of Sweet Potato
The adventitious roots of sweet potato are modified to store food. They contain large amounts of starch and other nutrients, which make sweet potatoes a popular food source. The presence of these modified roots also makes sweet potatoes an important crop for farmers. They are easy to cultivate and have a long shelf life.
Conclusion
In conclusion, sweet potato is a modified adventitious root that is an important food crop. The roots are modified to store food and are easy to cultivate. They are long, cylindrical, and tapered with reddish-brown skin and orange or yellow flesh.
Which of the following animals does not undergo metamorphosis?- a)Earthworm
- b)Tunicate
- c)Moth
- d)Starfish
Correct answer is option 'A'. Can you explain this answer?
Which of the following animals does not undergo metamorphosis?
a)
Earthworm
b)
Tunicate
c)
Moth
d)
Starfish
|
|
Prabal Poonia answered |
Ncert last line of earthworm .it's mentioned
Select the correct statement :- a)Franklin Stahl coined the term "linkage".
- b)Punnett square was developed by a Britishscientist.
- c)Spliceosomes take part in translation.
- d)Transduction was discovered by S. Altman.
Correct answer is option 'B'. Can you explain this answer?
Select the correct statement :
a)
Franklin Stahl coined the term "linkage".
b)
Punnett square was developed by a Britishscientist.
c)
Spliceosomes take part in translation.
d)
Transduction was discovered by S. Altman.
|
Mrprince 007 answered |
Option b is correct u may refer to genetics chapter
Which one of the following population interactionsis widely used in medical science for the productionof antibiotics ?- a)Commensalism
- b)Mutualism
- c)Parasitism
- d)Amensalism
Correct answer is option 'D'. Can you explain this answer?
Which one of the following population interactionsis widely used in medical science for the productionof antibiotics ?
a)
Commensalism
b)
Mutualism
c)
Parasitism
d)
Amensalism
|
|
Saranya Tiwari answered |
Amensalism is the population interaction in which one organism is harmed while the other is unaffected. This interaction is widely used in medical science for the production of antibiotics.
Explanation:
1. What is Amensalism?
Amensalism is a type of population interaction in which one organism is harmed while the other is unaffected. The organism that is harmed is called the amensal and the organism that is unaffected is called the neutral.
2. Production of Antibiotics:
Amensalism is widely used in medical science for the production of antibiotics. Antibiotics are substances that are produced by one organism to kill or inhibit the growth of another organism. The organism that produces the antibiotic is the amensal and the organism that is killed or inhibited is the neutral.
3. Example:
One of the examples of amensalism in the production of antibiotics is the production of penicillin. The fungus Penicillium produces penicillin to kill bacteria that are harmful to it. The bacteria are the neutral in this interaction, and the penicillium is the amensal.
4. Importance in Medical Science:
The production of antibiotics using amensalism is important in medical science because it provides a way to kill harmful bacteria without harming the human body. Antibiotics are used to treat bacterial infections and are an important tool in modern medicine.
Conclusion:
Amensalism is widely used in medical science for the production of antibiotics. Antibiotics are substances that are produced by one organism to kill or inhibit the growth of another organism. The organism that produces the antibiotic is the amensal and the organism that is killed or inhibited is the neutral. Antibiotics are important in modern medicine as they provide a way to kill harmful bacteria without harming the human body.
Explanation:
1. What is Amensalism?
Amensalism is a type of population interaction in which one organism is harmed while the other is unaffected. The organism that is harmed is called the amensal and the organism that is unaffected is called the neutral.
2. Production of Antibiotics:
Amensalism is widely used in medical science for the production of antibiotics. Antibiotics are substances that are produced by one organism to kill or inhibit the growth of another organism. The organism that produces the antibiotic is the amensal and the organism that is killed or inhibited is the neutral.
3. Example:
One of the examples of amensalism in the production of antibiotics is the production of penicillin. The fungus Penicillium produces penicillin to kill bacteria that are harmful to it. The bacteria are the neutral in this interaction, and the penicillium is the amensal.
4. Importance in Medical Science:
The production of antibiotics using amensalism is important in medical science because it provides a way to kill harmful bacteria without harming the human body. Antibiotics are used to treat bacterial infections and are an important tool in modern medicine.
Conclusion:
Amensalism is widely used in medical science for the production of antibiotics. Antibiotics are substances that are produced by one organism to kill or inhibit the growth of another organism. The organism that produces the antibiotic is the amensal and the organism that is killed or inhibited is the neutral. Antibiotics are important in modern medicine as they provide a way to kill harmful bacteria without harming the human body.
In which of the following processes, heat isneither absorbed nor released by a system?- a)Isothermal
- b)Adiabatic
- c)Isobaric
- d)Isochoric
Correct answer is option 'B'. Can you explain this answer?
In which of the following processes, heat isneither absorbed nor released by a system?
a)
Isothermal
b)
Adiabatic
c)
Isobaric
d)
Isochoric
|
Arya Nair answered |
In adiabatic process, there is no exchange of
heat.
heat.
Q. No- 1 - 90 carry 4 marks each and 1 mark is deducted for every wrong answer.Q. Leaves become modified into spines in :- a)Silk Cotton
- b)Opuntia
- c)Pea
- d)Onion
Correct answer is option 'B'. Can you explain this answer?
Q. No- 1 - 90 carry 4 marks each and 1 mark is deducted for every wrong answer.
Q.
Leaves become modified into spines in :
a)
Silk Cotton
b)
Opuntia
c)
Pea
d)
Onion
|
Rupali Chavan answered |
in opuntia plant leaves modified into spines to reduce rate of transpiration...
Preeti reached the metro station and found that theescalator was not working. She walked up thestationary escalator in time t1. On other days, if sheremains stationary on the moving escalator, then theescalator takes her up in time t2. The time takenby her to walk up on the moving escalator will be- a)
- b)
- c)t1 – t2
- d)
Correct answer is option 'B'. Can you explain this answer?
Preeti reached the metro station and found that theescalator was not working. She walked up thestationary escalator in time t1. On other days, if sheremains stationary on the moving escalator, then theescalator takes her up in time t2. The time takenby her to walk up on the moving escalator will be
a)
b)
c)
t1 – t2
d)
|
|
Sharmistha Giri answered |
Two parallel infinite line charges with linear charge densities +λ C/m and λl C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges?- a)Zero
- b)
- c)
- d)
Correct answer is option 'C'. Can you explain this answer?
Two parallel infinite line charges with linear charge densities +λ C/m and λl C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges?
a)
Zero
b)
c)
d)
|
|
Riya Banerjee answered |
Electric field due to line charge (1)
Electric field due to line charge (2)
Consider the following liquid-vapour equilibrium.Liquid ⇔ VapourWhich of the following relations is correct ?- a)
- b)
- c)
- d)
Correct answer is option 'A'. Can you explain this answer?
Consider the following liquid-vapour equilibrium.
Liquid ⇔ Vapour
Which of the following relations is correct ?
a)
b)
c)
d)
|
|
Vinisha Vinisha answered |
This is clausius Clapeyron equation!.
The reaction 
- a)Gatterman – Koch reaction
- b)Williamson Synthesis
- c)Williamson continuous etherification process
- d)Etard reaction
Correct answer is option 'B'. Can you explain this answer?
The reaction
a)
Gatterman – Koch reaction
b)
Williamson Synthesis
c)
Williamson continuous etherification process
d)
Etard reaction
|
|
Raghav Bansal answered |
The reaction is called Williamson synthesis
Among the following sets of examples for divergentevolution, select the incorrect option :- a)Forelimbs of man, bat and cheetah
- b)Heart of bat, man and cheetah
- c)Brain of bat, man and cheetah
- d)Eye of octopus, bat and man
Correct answer is option 'D'. Can you explain this answer?
Among the following sets of examples for divergentevolution, select the incorrect option :
a)
Forelimbs of man, bat and cheetah
b)
Heart of bat, man and cheetah
c)
Brain of bat, man and cheetah
d)
Eye of octopus, bat and man
|
Jeeshan Ahmed answered |
Divergent evolution occurs in the same structure, example - forelimbs, heart, brain of vertebrates which have developed along different directions due to adaptation to different needs whereas eye of octopus, bat and man are examples of analogous organs showing convergent evolution(as the function is same)
Option 4)
Eye of octopus , bat and man
This is correct.
Which one of the following is an example of a thermosetting polymer ?- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
Which one of the following is an example of a thermosetting polymer ?
a)
b)
c)
d)
|
|
Madhavi answered |
Thermosetting polymer....
Bakelite ...
Bakelite... .monomer ... formaldehyde and phenol...
structure aap Yaad. Kar Lena
Bakelite ...
Bakelite... .monomer ... formaldehyde and phenol...
structure aap Yaad. Kar Lena
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