KCET · BIOLOGY · STD 12 - 6. Evolution

By the statement 'Survival of the Fittest', Darwin meant that __________

A the strongest of all species survives
B the most intelligent of the species survives
C the cleverest of the species survives
D the most adaptable of the species to changes survives

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Answer & Solution

Correct Answer

(D) the most adaptable of the species to changes survives

Step-by-step Solution

Detailed explanation

(D) the most adaptable of the species to changes survives,
By the statement "Survival of the Fittest," Darwin means that (d) the most adaptable of the species best suited to their environment, through adaptability and advantageous traits, are more likely to survive and reproduce.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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