Double fertilisation is

Options

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

Answer

D

Explanation

Double fertilisation is the fusion of two male gametes to two different cells of the same female gametophyte . It consists of following two events .
(i) Syngamy Fusion of the egg nucleus with one male gamete is called syngamy.
(ii) Triple fusion It is the fusion of second male gamete and central cell.
Concept Enhancer Syngamy results in the formation of diploid (2n) zygote .Triple fusion involves three nuclei , i.e., one of the male gamete and two polar nuclei.
It gives rise to a triploid (3n) endosperm .