A: More than one pollen tube can enter an emb | vedclass

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(C) The phenomenon where more than one pollen tube enters the embryo sac is known as polysiphony. While usually only one pollen tube enters,in some sp

Vedclass · Accepted Answer

Assertion is correct,but Reason is incorrect.

Vedclass · Answer

(C) The phenomenon where more than one pollen tube enters the embryo sac is known as polysiphony. While usually only one pollen tube enters,in some species,multiple tubes can reach the embryo sac,although only one participates in fertilization. Thus,the Assertion is correct.Double fertilization is a unique process in angiosperms involving the fusion of one male gamete with the egg cell (syngamy) and the other with the two polar nuclei (triple fusion). This process requires two male gametes from the same pollen tube. Double fertilization cannot occur by the contribution of gametes from different pollen tubes. Therefore,the Reason is incorrect.

$A$: More than one pollen tube can enter an embryo sac.
$R$: Double fertilization can occur by contribution of gametes from different pollen.

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$A$: More than one pollen tube can enter an embryo sac.$R$: Double fertilization can occur by contribution of gametes from different pollen.