describe the development of endosperm in angiosperm
Answers
In angiosperms the endosperm is a special tissue which is formed as a result of vegetative fertilization, triple fusion or fusion of a male gamete with diploid secondary nucleus of the central cell. ... Depending upon the mode of its formation, angiospermic endosperm is of three types— nuclear, cellular and helobial.
ENDOSPERM DEVELOPMENT IN ANGIOSPERMS
1.Endosperm develops from the triploid primary endospermic nucleus (PEN).
2.The PEN divides and redivides by mitosis to form a tissue called endosperm.
3.Endosperm grows faster than the embryo and gets surrounded around the embryo.
4.In some plants, endosperm is completed utilized by the developing embryo and as a result there is no endosperm in the mature seeds. This type of seed without endosperm is called non endospermic (exalbuminous). Example: Ground nut, Pea.
5.In some plants, endosperm is partially utilized by the developing embryo and as a result there is endosperm in the mature seeds. This type of seed with endosperm is called endospermic (albuminous). Example: Maize, Castor.