Question

define double fertilisation in plants​

Answer 1

Explanation:

double fertilisation means fusion of two males that one of the male gamete fuses with egg cell and forms zygote and another male gamete moves towards the central cell ie two polar nucleii and forms triploid primary endosperm which devlopes into later endosperm so

occuranace of two fusion so it referred to as a double fertilisation .

Answer 2

Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte (megagametophyte, also called the embryo sac) with two male gametes (sperm). It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower. The pollen grain then takes in moisture and begins to germinate, forming a pollen tube that extends down toward the ovary through the style. The tip of the pollen tube then enters the ovary and penetrates through the micropyle opening in the ovule. The pollen tube proceeds to release the two sperm in the megagametophyte.