AIIMS2017Botany-Evolution

AIIMS 2017 Botany Natural Selection MCQ Question

Type: MCQ-conceptual-Medium-Class 12

The best description of natural selection is

A

the survival of the fittest

B

the struggle for existence

C

the reproductive of the members of a population best adapted to the environment

D

a change in the proportion of variations within a population

Correct Answer

Option B

Detailed Explanation

Natural selection is best described as "the struggle for existence" because it emphasizes the competition among individuals for limited resources, which drives evolutionary change. While "the survival of the fittest" (options A and C) is often used to summarize natural selection, it can be misleading as it implies that only the strongest survive, rather than highlighting the importance of adaptability and reproductive success in various environments. Option D, while similar to B, is redundant and does not provide a distinct perspective on the concept. Understanding natural selection involves recognizing that it is the differential survival and reproduction of individuals based on their traits that leads to evolution.

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