In monocots,the male gametophyte is represented by:

The endothecium layer of anther lobes is present:

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.

Which of the following processes represents microsporogenesis?

Identify $A$ and $B$ in the diagram given below:

How many microsporangia are located at the corners of a typical bilobed anther of angiosperm?