Describe the location and function of the $Endothecium$ and $Tapetum$.

Given below are two statements: One is labelled as Assertion $(A)$ and the other is labelled as Reason $(R).$
Assertion $(A) :$ Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus.
Reason $(R):$ Presence of more than one nucleus in the tapetum increases the efficiency of nourishing the developing microspore mother cells.
In light of the above statements,choose the most appropriate answer from the options given below:

Draw the diagram of a microsporangium and label its wall layers. Write briefly about the wall layers.

Choose the correct option showing the right arrangement of different wall layers from the sporogenous tissue to the periphery in a $T.S.$ of a young anther.

Identify the incorrect statement regarding the sporogenous tissue.

Which layer of the microsporangium is also known as the fibrous layer?