Filiform apparatus is a characteristic feature of$-$

In a typical angiosperm,how many female gametophytes develop within a single megasporangium?

In flowering plants,the megaspore develops into the embryo sac,which contains .....

Select the incorrect statement regarding the Megaspore Mother Cell $(MMC)$.

The arrangement of the nuclei in a normal embryo sac in the dicot plants is

The three cells present at the chalazal end form $.....P......$,and the three cells present at the micropylar end form $.....Q.....$.
$\quad\quad\quad \quad \text { P } \quad\quad\quad \text { Q }$