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Q. No.| Assertion(A): | Natural selection is differential reproduction |
| Reason(R): | The unit of natural selection is individual |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (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: Â Natural Selection |
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Leaves are variously modified from photosynthetic structures to form the insect-trapping pitchers of pitcher plants, the insect-trapping jaws of Venus flytrap, and the spines of cactuses. Such leaves would be an example of:
| 1. | Homology | 2. | Analogy |
| 3. | Phenotypic plasticity | 4. | Vestigeality |
Subtopic: Â Natural Selection |
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Consider the given two statements:
| Assertion (A): | Pest species evolve pesticide resistance via natural selection. |
| Reason (R): | After exposure to pesticides, some pests develop mutations that enable them to survive and leave progeny. |
| 1. | (A) is False but (R) is True. |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Subtopic: Â Natural Selection |
From NCERT
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