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Biology · 2026 · 1 mark
CBSE 2026 · Region 1 · Set 3 · Q13
Assertion (A): Fossils provide direct evidence for evolution. Reason (R): Fossils help to trace evolutionary relationships among organisms over time.
Assertion (A) : Fossils provide direct evidence for evolution.
Reason (R) : Fossils help to trace evolutionary relationships among organisms over time.
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.