Two nuclei within one cell are found in

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

The functional megaspore undergoes

If the diploid chromosome number in a flowering plant is $12$,then which one of the following will have only $6$ chromosomes?

Synergids are

Identify the parts of the pistil labeled as $P$,$Q$,and $R$:
Receptive surface for pollen grains $- P$
Elongated slender part of the pistil $- Q$
Basal swollen part of the pistil $- R$
$\quad\quad\quad\quad P \quad\quad\quad Q \quad\quad\quad R$