CBSE 2026 · Region 4 · Set 1 · Q13 · 1 mark
Assertion (A) : Cleistogamous flowers have assured seed set.
Reason (R) : Cleistogamous flowers are invariably autogamous and do not depend on any pollinating agents.
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 of the Assertion (A).
Sexual Reproduction in Flowering PlantsPre-fertilisation: Structures and EventsUnderstandassertion_reasonmedium
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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.