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Q. No.
Assertion(A):
Ginkgo biloba is living fossil.
Reason(R):
Organism which have persisted and remain unchanged for the past several million years while their relatives disappeared.
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
1.
Both (A) & (R) are true and (R) is the correct explanation of (A)
2.
Both (A) & (R) are true but (R) is not the correct explanation of (A)
3.
(A) is true but (R) is false
4.
Both (A) and (R) are false
Subtopic: Palentological Evidences of Evolution |
67%
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| Assertion(A): | Some mutations are spontaneous, others are due to environmental mutagens. |
| Reason(R): | Mutations due to replication errors are very rare. |
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
| 1. | Both (A) & (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) & (R) are true but (R) is not the correct explanation of (A) |
| 3. | (A) is true statement but (R) is false |
| 4. | Both (A) and (R) are false statements |
Subtopic: Modern Theory of Evolution |
65%
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| Assertion(A): | Coacervates are believed to be the precursors of life. |
| Reason(R): | Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules. |
| 1. | Both (A) & (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) & (R) are true but (R) is not the correct explanation of (A) |
| 3. | (A) is true but (R) is false |
| 4. | Both (A) and (R) are false |
Subtopic: Definition & Types of Evolution | Cosmic Evolution |
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Allopatric speciation
Choose the correct answer from the options given below:
1. A and E only
2. A, E, and C only
3. A, B, and D only
4. A , B, C and E
| A. | New species evolve when one (or) more population of a species becomes separated from the other population of the species due to geographical barrier |
| B. | Small groups of individuals break off from the larger group and form a new species |
| C. | Over the time, cessation of the gene flow between geographically isolated population leads to the reproductive isolation |
| D. | The initial stage of allopatric speciation is polymorphism that does not depend on space within a population |
| E. | As a result of natural selection, geographically separate population become adapted to local conditions and thus they are genetically differentiated |
Choose the correct answer from the options given below:
1. A and E only
2. A, E, and C only
3. A, B, and D only
4. A , B, C and E
Subtopic: Concept of Speciation |
52%
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Even harmful mutations do not get eliminated from the gene pool due to
| 1. | Genetic drift |
| 2. | Higher frequency due to dominant nature |
| 3. | Being recessive and persisting in heterozygous condition |
| 4. | Survival value |
Subtopic: Hardy Weinberg Law |
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Given below are two statements
In light of the above statements, choose the most appropriate answer from the options given below
| Statement I : | In sympatric speciation, gene flow is reduced by polyploidy, sexual selection and habitat differentiation |
| Statement II: | Hybrid zones, which produce offspring of mixed ancestry, are the predicted outcome when species with incomplete reproductive barrier come into contact with one another. |
In light of the above statements, choose the most appropriate answer from the options given below
| 1. | Both Statement I and Statement II are correct |
| 2. | Both Statement I and Statement II are incorrect |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Concept of Speciation |
63%
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What will happen to the population of two forms of Biston betularia (peppered moth) inhabiting the region polluted due to emission of soot from industries?
A. Population of dark colored moth will increase
B. Population of both the forms will decrease
C. Population of light colored moth will increase
D. Population of dark colored moth will increase while the population of light colored moth will decrease
E. Population of both the forms will increase
Choose the correct answer from the options given below:
1. A and D only
2. C, D, and E only
3. C and D only
4. B, C, and D only
A. Population of dark colored moth will increase
B. Population of both the forms will decrease
C. Population of light colored moth will increase
D. Population of dark colored moth will increase while the population of light colored moth will decrease
E. Population of both the forms will increase
Choose the correct answer from the options given below:
1. A and D only
2. C, D, and E only
3. C and D only
4. B, C, and D only
Subtopic: Natural Selection |
91%
From NCERT
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NEET 2025 - Target Batch
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To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Genetic drift operates in
1. Small isolated population
2. Fast reproductive population
3. Large isolated population
4. Slow reproductive population
1. Small isolated population
2. Fast reproductive population
3. Large isolated population
4. Slow reproductive population
Subtopic: Difference Between Drift & Selection |
84%
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At a particular locus, frequency of "A" allele is 0.6 and that of "a" is 0.4. What would be the frequency of heterozygotes in a random mating population at equilibrium?
1. 0.36
2. 0.16
3. 0.24
4. 0.48
1. 0.36
2. 0.16
3. 0.24
4. 0.48
Subtopic: Hardy Weinberg Law |
82%
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The eye of octopus and eye of dog show different structural patterns, yet they perform similar functions. This is an example of
1. Analogous organs that have evolved due to divergent evolution
2. Homologous organs that have evolved due to convergent evolution
3. Homologous organs that have evolved due to adaptive radiation
4. Analogous organs that have evolved due to convergent evolution
1. Analogous organs that have evolved due to divergent evolution
2. Homologous organs that have evolved due to convergent evolution
3. Homologous organs that have evolved due to adaptive radiation
4. Analogous organs that have evolved due to convergent evolution
Subtopic: Concept of Organic Evolution: Evidence |
89%
From NCERT
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