First slide

Double Fertilisation

Question

Double fertilisation is

Easy

A

fusion of two male gametes with one egg
B

fusion of one male gamete with two polar nuclei
C

fusion of two male gametes of pollen tube with two different eggs
D

syngamy and triple fusion

Solution

Double fertilisation is the fusion of two male gametes to two different cells of the same female gametophyte. It consists of the following two events
Syngamy is the fusion of the egg nucleus with one male gamete.
Triple fusion is the fusion of second male gamete and polar nuclei of central cell.

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