Question

development of diploid embryo sec directly from a differentiated megaspore mother cell is called ​

Answer 1

Answer:

gametophytic apomixis, an unreduced embryo sac develops from the megaspore mother cell by circumvention of meiosis (Diplospory) or directly from a cell in the nucellus (Apospory). ... The embryo is formed by the unfertilized egg (parthenogenesis) or some other cell of the embryo sac.

Answer 2

Answer:

In gametophytic apomixis, an unreduced embryo sac develops from the megaspore mother cell by circumvention of meiosis (Diplospory) or directly from a cell in the nucellus (Apospory). ... The embryo is formed by the unfertilized egg (parthenogenesis) or some other cell of the embryo sac.