Q20 of 30 Page 1

Name the two end products of double fertilisation in angiosperms. How are they formed? Write their fate during the development of seed.


• Endosperm and embryo are the two end products of double fertilization.


• One of male gametes fuse with the nucleus of an egg cell by completing syngamy which results in a zygote.


• The other male gametes fuse with two polar nuclei which produce a triploid primary endosperm nucleus (PEN).


• Double fertilization called since in embryo sac two types of fusion takes place.


• After triple fusion, the cental cell becomes the primary endosperm cell (PEC) and develops into the endosperm whereas the zygote develops into an embryo.


Explanation:



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