Question

How does the mmc developed into a 7 celled 8 nucleate embryo sac in an angiosperm?

Answer 1

Firstly ,the megaspore mother cell have karyokinesis leading to the formation of 8 nucleus without any cell division .At 8 nucleate embryonic stage ,differentiation takes place ,and seven cells are formed namely 3 antipodal cells ,a central cell with polar nucleus , 2 synergids and one Egg cell.

Answer 2

Answer:

Explanation:

The megaspore mother cell produces two nuclei by the mitotic division which moves to opposite poles and forms 2- nucleate embryo sac. Further mitosis produces 4 nucleate and then 8 nucleate stage of the embryo sac. After 8 nucleate stage, the cell wall is laid down and typical embryo sac is formed.