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Science · 2026 · 1 mark
CBSE 2026 · Region 5 · Set 1 · Q8
Assertion (A): Bacteria that can withstand heat have better chances of survival in a heat wave. Reason (R): Accumulation of variations in a species…
Assertion (A) : Bacteria that can withstand heat have better chances of survival in a heat wave.
Reason (R) : Accumulation of variations in a species increases the chances of its survival in changing environment.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
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CBSE Class 10 Science past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.