Question

Draw a labelled sketch of a typical embryo sac and write one main
function of the following:
(a) Egg cell
(b) Antipodal cells
(c) Synergids​

Answer 1

★ Egg cell:-

______________

The egg cell, or ovum (plural ova), is the female reproductive cell, or gamete, in most anisogamous organisms (organisms that reproduce sexually with a larger, "female" gamete and a smaller, "male" one). The term is used when the female gamete is not capable of movement (non-motile).

★ Antipodal cells:-

_____________________

any of three haploid cells in most angiosperms that are grouped at the end of the embryo sac farthest from the micropyle. — called also antipodal cell.

★ synergids:-

_______________

Synergid cells are two specialized cells that lie adjacent to the egg cell in the female gametophyte of angiosperms and play an essential role in pollen tube guidance and function. ... The synergids are also essential for the cessation of pollen tube growth and release of the sperm cells.

Answer 2

Egg cell  :- Egg cell provides protection to the egg contents and embryo against physical damage and infected by germs. And also regulates the exchange of metabolic gases and water, and provides calcium to the develop.

Antipodals cell :- They  are nutritive in function and they nourishes the embryo sac.  Antipodal cells  help in growth and development of endosparm

Synergid cells:- These cells  are located in female gametophyte and these are essential for angiosperm .Synergids are a part of the egg apparatus in flowering plants.