The ovule of an angiosperm is technically equivalent to
megasporangium
megasporophyll
megaspore mother cell
megaspore.
Perisperm is
The ploidy level of nucellus and female gametophyte respectively is
Generally how many megaspores take part in the development of female gametophyte
Mature Polygonum type embryo sac has got
A linear tetrad of $4$ cells lying in an axial row is formed during the development of