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Biology · 2025 · 1 mark
CBSE 2025 · Region 4 · Set 3 · Q6
Select the statements that are true for outbreeding devices in the flowering plants. (i) They discourage cross-pollination and ensure…
Select the statements that are true for outbreeding devices in the flowering plants.
(i)
They discourage cross-pollination and ensure self-pollination.
(ii)
They are advantageous as they lead to inbreeding depression.
(iii)
Self-incompatibility prevents self-pollen from fertilising the ovules.
(iv)
To prevent self-pollination in some species pollen release and stigma receptivity are not synchronised. Choose the correct answer :
Official answer
(C)
(iii) and (iv)
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CBSE Class 12 Biology past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.