NEETBotany-Evolution

NEET Botany Natural selection MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Which of the following statements are incorrect for Natural selection?

(i) Natural selection is based on certain observations which are factual.

(ii) Populations are stable in size except for seasonal fluctuation, means that there had been competition for resources.

(iii) Variation is the most fundamental evolutionary factor and all variations are inherited to the progeny.

(iv) Variations which are heritable and which make resource utilisation better for few (adapted to habitat better) will enable only those to reproduce and leave more progeny.

(v) Herbicides, pesticides etc., resistant organisms/cells are appearing in a time scale of months or years and not centuries.

(vi) Appearance of herbicides, pesticides etc., resistant organisms/cells are examples of evolution by anthropogenic action.

A

(i), (ii) and (vi)

B

(i), (iii), (iv) and (vii)

C

Only (iii)

D

All of these

Correct Answer

Option C

Detailed Explanation

Statement (iii) is incorrect as not all variations are inherited; only genetic variations are passed to progeny.

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