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NEET Exam  >  NEET Tests  >  Test: Biology Assertion and Reasoning Type Questions (March 30) - NEET MCQ

Test: Biology Assertion and Reasoning Type Questions (March 30) - NEET MCQ


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30 Questions MCQ Test - Test: Biology Assertion and Reasoning Type Questions (March 30)

Test: Biology Assertion and Reasoning Type Questions (March 30) for NEET 2024 is part of NEET preparation. The Test: Biology Assertion and Reasoning Type Questions (March 30) questions and answers have been prepared according to the NEET exam syllabus.The Test: Biology Assertion and Reasoning Type Questions (March 30) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Biology Assertion and Reasoning Type Questions (March 30) below.
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Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 1
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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.

Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 1

The genetic material should be stable enough not to change with different stages of life cycle, age or with change in physiology of the organism. The DNA strands being complementary, if separated by heating come together only when appropriate conditions are provided. Further, 2'-OH group present at every nucleotide in RNA is a reactive group and makes RNA labile and easily degradable. RNA is also now known to be catalytic, hence reactive. Therefore, DNA chemically is less reactive and structurally more stable when compared to RNA. Therefore, among the two nucleic acids, DNA is a better genetic material.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 2
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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.

Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 2

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.

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Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 3
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A: Sometimes, some babies have a small tail.

R: This is just a type of mutant variety.

Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 3

This is atavism → unusual occurrence of the ancestral trait.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 4
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: Introduction of sex education in schools should be encouraged.

Reason: This will encourage children to believe in myths about sex related aspects.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 4

Introduction of sex education in schools should be encouraged to provide right information to the young children and to discourage them from believing in myths and having misconceptions about sex- related aspects. Proper information about reproductive organs, adolescence and related changes, safe and hygienic sexual practices, sexually transmitted diseases (STDs), AIDS, etc., would help people, especially those in the adolescent age group to lead a reproductively healthy life.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 5
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: Amniocentesis is often missemployed.

Reason: Amniocentesis is meant for determining the genetic disorders in the foetus, but it is being used to determine the sex of the foetus, leading to death of the normal female foetus.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 5

Amniocentesis (amniotic fluid test or AFT) is a medical procedure used in prenatal diagnosis of chromosomal abnormalities and fetal infections, and also for sex determination, in which a small amount of amniotic fluid, which contains fetal tissue, is sampled from the amniotic sac surrounding a developing foetus, and then the fetal DNA is examined for genetic abnormalities.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 6
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: The two chains of DNA have anti- polarity.
Reason: In one chain of DNA, ribose sugar at 5' end consists of a free phosphate moiety while at the other end the ribose has a free 3' OH group
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 6

The two chains of DNA have anti-parallel polarity this is because one chain has free phosphate moiety at 5'-end of the sugar and another chain has free phosphate moiety at 3'-end.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 7
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A: A single large mutation called saltation can produce new species.

R: Mutations are directional.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 7
Mutations are non-directional.
Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 8
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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): Tapetum is a part of anther wall that has 2-3 layers of cells.
Reason (R): Tapetum layers helps in development and growth of pollen grain.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 8

In flowering plants, tapetum are the specialized cells that provide nutrition to the pollen grain within the anther.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 9
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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.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 9

Sexual reproduction involves the transfer fusion of male and female gametes known as pollination. The fertilized ovules produce seeds that continue the next generation.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 10
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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): Seed is the final product of sexual reproduction in angiosperms.
Reason (R): A seed typically bears seed coat, cotyledons and an embryo axis.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 10

After fertilization, the ovary wall develop in fruits embryo captured in the seed as final product of sexual reproduction in plants. The seed bear protective seed coat, cotyledons and embryo axis.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 11
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: Plasmodium vivax is responsible for malaria.
Reason: Malaria is caused by polluted water.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 11

Malaria is caused by Plasmodium whose sexual phase occurs in the mosquito Anopheles. When female Anopheles feed on blood, they can serve as vector host for malarial parasite.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 12
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: Interferons help in the elimination of viral infections.
Reason: Interferons released by infected cells, reach nearby uninfected cells and make them resistant to viral infection.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 12

Virus infected cells secrete proteins called interferons, which protect non-infected cells from further viral infection.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 13
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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
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 13

Natural methods work on the principle of avoiding chances of meeting of ovum and sperm, i.s. periodic abstinence, lactational amenorrhea. In barrier method, ovum and sperm are prevented from physically meeting with help of a barrier, e.g. condoms, cervical caps, etc.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 14
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Directions: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: Saheli - the new oral contraceptive for the female contains a non-steroidal preparation.
Reason: It is 'once a week' pill with very few side effects and high contraceptive value.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 14

Saheli is centchroman chemically. It works by preventing implantation.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 15
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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.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 15

The backbone of a DNA chain or strand is built up of alternate deoxyribose sugar and phosphoric acid groups. The phosphate group is connected to carbon 5' of the sugar residue of its own nucleotide and carbon 3' of the sugar residue of the next nucleotide by (3' → 5') phosphodiester bonds. The two DNA chains are antiparallel, that is, they run parallel but in opposite directions. In one chain the direction is 5' → 3' while in the opposite one, it is 3' → 5'.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 16
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Directions: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: Hydrophily is a major mode of pollination in most of the aquatic plants in angiosperms.
Reason: Almost all the aquatic dicot and monocot plants require water for the transport of male gametes and for fertilisation.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 16

Hydrophily is the mode of pollination which is accomplished through the agency of water. Pollination by water is quite rare in flowering plants and is limited to only about 30 genera, mostly monocotyledons e.g., Vallisneria, Zostera, Ceratophyllum, etc. In many aquatic plants with emergent flowers, pollination occurs by wind or insects, e.g., Lotus, Water Lily, Water Hyacinth, etc.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 17
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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.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 17

Family planning helps in maintaining reproductive health.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 18
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: The progeny produced have both the characters of parents.
Reason: The process by which characters pass from parent to progeny is known as inheritance.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 18

According to Mendelian inheritance, genes come in different varieties called alleles. Somatic cells contain 2 alleles with one allele provided by each parent of an organism.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 19
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A: Blood group analysis shows human beings are more closely related to apes than to monkeys.

R: The blood groups A and B are found in apes, but not in monkeys.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 19
Man and apes have common ancestors.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 20
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: Cleistogamous flowers produce assured seed set in the absence of pollinators.
Reason: These flowers do not open at all.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 20

Cleistogamous flowers do not open at all thus ensuring fertilisation and hence produce assured seed-set even in the absence of pollinators.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 21
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: Reproductive and Child Healthcare Programme is for reproduction related areas.

Reason: It deals with creating awareness among various reproduction related aspects.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 21

The Reproductive and Child Health (RCH) Programme was launched in October 1997. The main aim of the programme is to reduce infant, child and maternal mortality rates.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 22
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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.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 22

Death rate has fallen due to improved personal hygiene, sanitation and modern medicines. IMR and MMR have decreased due to better medical facilities.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 23
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A: Many countries have banned the use of antibiotics in the cattle feed.

R: Dairymen give antibiotics in the feed to the cattle, and it becomes breeding grounds for the antibiotic-resistant bacteria.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 23
Diseases will not be cured by using the same antibiotic later.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 24
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A: There is 99% homology in the haemoglobin of man and Gorilla.

R: Modern man is a direct descendent of Gorilla.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 24
Cro-Magnon man is regarded as the most recent ancestor of today's man.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 25
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: Mutations cause evolution.
Reason: Ancon sheep and hornless cattle are developed by inducing mutation.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 25

Mutation theory of Hugo de Vries states that evolution is a jerky process where new varieties and species are formed by mut tions that functions as raw material of evolution. A number of mutations have appeared in the past. Mutations are also induced. Ancon sheep is a short legged variety which appeared suddenly in Massachusetts in 1971. Hornless cattle developed as mutation from the horned cattle in 1889.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 26
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A: Lycaenops is a connecting link between reptiles and mammals.

R: In the Permian period there was the origin of mammal-like reptiles.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 26
Permian period is a part of palaeozoic era.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 27
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: Rabies is an infection of mammals, it involves central nervous system which may result in paralysis and finally death.
Reason: This is caused by neurotropic bacteria in saliva of rabies animal.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 27

Rabies (hydrophobia) is caused by rabies virus. Its vectors are rabid animals especially dogs. It leads to encephalitis, fear of water (hydrophobia), high fever, severe headache, spasm of throat & chest, leading to death.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 28
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: The progeny in F2-generation traits were identical to their parental type.
Reason: The progenyshow no blending of traits
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 28

Both the characters appear during the formation of F2-generation, so no blending occurs.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 29
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:

Assertion: Mendel used true-breeding pea lines for artificial pollination experiments for his genetic studies.
Reason: For several generations, a true-breeding line shows the stable trait inheritance and expression.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 29

On garden pea for many years mendel carried out hybridization experiments. He performed various types of cross breeding and then allowed the offspring for self breeding. He selected varieties and used pure lines of ture breeding lines, i.e., they produce offspring resembling the parents. these lines show the stable trait inheritance and expression for several generations making them suitable for genetic studies.

Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 30
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A: Muscles of external ears are fully developed in humans.

R: These muscles help in moving ear pinna in humans.
Detailed Solution for Test: Biology Assertion and Reasoning Type Questions (March 30) - Question 30
These muscles are vestigial in humans.

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