The saccus of $Pinus$ pollen is a modification of:

Select the incorrect statement regarding the stamen.

Identify the figure shown.

Given below are two statements.
Statement $I$: Generally,anthers in angiosperms are dithecous,having two pollen sacs in each lobe.
Statement $II$: Each sporangium produces pollens from sporogenous tissues by the process of sporogenesis.
In light of the above statements,select the correct answer from the options given below.

The figure shows the layers of the microsporangium wall. Identify $P$ and $Q$.
$\quad\quad\quad P\quad\quad\quad\quad Q$

What is the ploidy of a male gamete?