Question : Give the functions of any four parts of the angiospermic ov

1.	Question : Give the functions of any four parts of the angiospermic ovule.
Answer» Solution :Functions of different parts of the OVULE : (1) Funicle : The funicle supplies nutrition to the body of the ovule owing to the presence of vascular strands in it. (2) Nucellus : The nucellus plays an important role in the development of embryo sac. (3) Integuments : The integuments provide protection to the nucellus and the embryo sac. After FERTILIZATION, the integuments are converted into the seed coat consisting of an outer thick and resistant layer CALLED testa and an inner thin layer called tegmen. (4) Micropyle : The microphyle acts as a passage for the entry of pollen tube into the ovule during fertilization. Besides, it allows the entry of water during germination. (5) Egg apparatus : The egg after fertillzation GIVES rise to diploid zygote which later on develops into an embryo. The synergids help in fertilization. They degererate after fertilization. (6) Secondary nucleus : The secondary nucleus after double fertilization forms primary endosperm nucleus which later on develops into the endosperm. (7) Antipodal cells : The antipodal cells are accessory cells. They degenerate after fertilization.

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