Question

Assertion (A): Natural selection means survival of the fittest.

Reason (R): Natural variations give an adaptive advantage. More adaptive forms of a trait remain and become more common while less adaptive ones disappear with time.

विकल्प

• Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

• Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

• Assertion (A) is true but reason (R) is false.

• Both assertion (A) and reason (R) are false.

Answer 1

Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

Explanation:

Natural selection favours heritable variations that improve adaptation and reproductive success. As those variants become more common, less-adaptive forms may decline.