Question

The megaspore mother cell is differentiated from one of the cells of the

A nucellus

B pollen grains

C microsporangia

D both B and c

Answer 1

One hypodermal nucellar cell of the micropylar region of the ovule differentiates as the sporogenous cell. It forms a diploid megaspore mother cell or megasporocyte. The megaspore mother cell undergoes meiosis and forms a row of four haploid megaspores. Only the chalazal megaspore remains functional while the other three degenerate.

So,the correct option is A nucellus.