CBSE 2026 · Region 1 · Set 2 · Q13 · 1 mark
Assertion (A) : When we see stars, we are apparently peeping into the past.
Reason (R) : What we see today is an object whose emitted light started its journey millions of years back reaching our eyes now.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation for Assertion (A).
EvolutionOrigin of LifeUnderstandassertion_reasoneasy
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CBSE Class 12 Biology past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.