Question

explain fertilization with the help of a diagram what is double fertilization explain in about 100 words

Answer 1

Double fertilization : Thecfertilization occurring twice is called double fertilization. In flowering plants out of the two male gametes , one male gamete units with the egg cell to form embryo. While the other unites with the secondery nucleus to form endosperm.

I am in 8th class. Hope this helped you.

Answer 2

Hey There! ☺

Nice Question! ♥

Here is your answer...

========================================

♦ After pollination (transfer of pollen grain from anther of stamen to stigma of pistil/carpel), pollen grains give rise to pollen tubes.

♦ Each pollen tube carries two male gametes which travels through the style and finally reach the ovary.

♦ The ovary contains ovules. The gametes enter into the ovules.

♦ Each ovule has an egg cell.

♦ The process of fusion of male and female gametes is called fertilisation.

♦ In the process of fertilisation, one male gamete fuses with the egg to form diploid zygote.

This process is called syngamy.

♦ The other male gamete fuses with two polar nuclei to form triploid primary endosperm nucleus.

This process is called triple fusion.

♦ The process of syngamy and triple fusion take place in embryo sac of the ovule.

♦ These two fusions are together known as double fertilisation.

♦ After fertilisation, zygote develops into embryo.

♦ Primary endosperm nucleus develops into endosperm.

Endosperm provides nutrition to developing embryo.

♦ Ovule changes to seed.

♦ Ovary changes to fruit.

♦ Petals and sepals fall off.


==================================
Hope you find my answer helpful... ☺☺☺