(a) Formation of diploid megaspore mother cell.
(b) Formation of four megaspores by mdosis.
(c) Formation of haploid functional megaspore.
(d) 1st nuclear mitotic division (2-nucleated embryo sac).
(e) 2nd nuclear mitotic division ( 4-nucleated embryo sac).
(f) 3rd nuclear division (8-nucleated embryo sac)
(g) shifting of riuclei.
Development of female gametophyte or embryo sac
