The number of mitotic generations required to form a mature embryo sac in most of the flowering plants is
Indicate the stages where meiosis and mitosis occur $(1,\, 2$ or $3)$ in the flow chart.Megaspore mother cell $\xrightarrow{1}$ Megaspores $\xrightarrow{2}$ Embryo sac $\xrightarrow{3}$ Egg
Persistent nucellus in the seed is known as
Synergid's filiform apparatus
The functional megaspore undergoes