A: Triple fusion is associated with sexual re | vedclass

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(D) Triple fusion is a characteristic feature unique to angiosperms (flowering plants) and does not occur in gymnosperms,even though both are spermato

Vedclass · Accepted Answer

Both Assertion and Reason are incorrect.

Vedclass · Answer

(D) Triple fusion is a characteristic feature unique to angiosperms (flowering plants) and does not occur in gymnosperms,even though both are spermatophytes.Therefore,the Assertion is incorrect.Triple fusion involves the fusion of one male gamete with two polar nuclei (or a secondary nucleus) to form the primary endosperm nucleus $(PEN)$,which develops into the endosperm,not a 'definitive nucleus' as nutritive tissue.Thus,the Reason is also incorrect.

$A$: Triple fusion is associated with sexual reproduction in all spermatophytes.
$R$: It is required to form the definitive nucleus as nutritive tissue.

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$A$: Triple fusion is associated with sexual reproduction in all spermatophytes.$R$: It is required to form the definitive nucleus as nutritive tissue.