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Biology · 2026 · 1 mark
CBSE 2026 · Region 2 · Set 3 · Q15
Assertion (A): Under a particular set of selection pressure, organisms evolve towards the most efficient reproductive strategy. Reason (R):…
Assertion (A) : Under a particular set of selection pressure, organisms evolve towards the most efficient reproductive strategy.
Reason (R) : Populations evolve to maximise their reproductive fitness in the habitat where they live.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation for Assertion (A).
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CBSE Class 12 Biology past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.