Question

What is the ploidy of functional megaspore in flowering plants.

Answer 1

Dear student,

In flowering plants, the process of megasporogenesis results in the formation of four megaspores. Out of them, three degenerate, and the remaining one acts as the functional megaspore. This functional megaspore divides mitotically and gives rise to the female gametophyte (also known as the embryo sac ) which consists of the 3 antipodals, 1 central cell , 1 egg cell and 2 synergids.
Ploidy of the cells are as follows-

Cell	Ploidy
Nucellus	2n (diploid)
Megaspore mother cell	2n (diploid)
Functional megaspore	n (haploid)
Antipodal cell	n (haploid)
Central cell	2n (diploid)
Egg cell	n (haploid)
Synergid	n (haploid)

Regards ,
Ruchi Bhatt