The female gametophyte of angiospermic plants is represented by:

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

The following figure shows a diagrammatic view of a typical anatropous ovule. What are $P$,$Q$,and $R$?

What is the ploidy of the megaspore mother cell $(MMC)$?

What is monosporic development?

Which of the following parts belong to the gynoecium? $P$ - Stigma,$Q$ - Anther,$R$ - Style,$S$ - Ovary,$T$ - Connective,$U$ - Filament