First slide

Double Fertilisation

Question

Fertilized embryo sac is shown in the diagram. P and Q are results of …………. and ……….. respectively.

Easy

A

double fertilization, syngamy
B

triple fusion, syngamy
C

syngamy, parthenocarpy
D

syngamy, triple fusion

Solution

P is the zygote which is formed by fusion of the male gamete with the female gamete (syngamy). Q is the primary endosperm nucleus and is formed by fusion of male gamete with the two polar nuclei. This is known as triple fusion.

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