Question

what is double fertilization in plants​

Answer 1

double fertilization is a process of angiosperms fution of embryo sac with two sperm cells and also produce a diploid zygote as well as Triploid endosperm

by the way this time it is not copied

Answer 2

Double fertilization involves two steps :-

1. Syngamy

2. Triple fusion

Syngamy ⇒ During the fertilization in flowering plants pollen tube releases two male gametes & it moves towards the egg cell and fuses with the nucleus to form diploid zygote.  

Triple fusion ⇒ The other male gametes move towards the two polar nuclei located in the central cell & fuses with it & produce triploid primary endosperm nucleus.  

This is called double fertilization.