Explain what is double fertilization in plants
yashpratapsingh70:
hey dude Double fertilization is a complex fertilization mechanism of flowering plants. This process involves the joining of a female gametophyte with two male gametes. It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower
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A pollen tube releases two sperm cells into an unfertilized ovule. 2:Double fertilization occurs when one sperm cell fuses with the egg to produce a zygote, and the other sperm cell fuses with the two polar nuclei to make the endosperm. 3: After double fertilization, a seed and fruit develop.
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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.
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