Question

Trace the developement of megaspore mother cell upto the formation of a mature embryo sac in a flowering plant

Answer 1

The megaspore mother cell is diploid in nature(2n). The megaspore mother cells undergoes division to produce 4 haploid cells(n) which arrange themselves in megaspore tetrad. Three of the produced cells degenerates and only one remains functional. The functional megaspore develops further and forms the embryo sac.