Stamen Microsporangium

Which one of the following statements is correct?

1. Sporogenous tissue is haploid

2. Endothecium produces the microspores

3. Tapetum nourishes the developing pollen

4. Hard outer layer of pollen is called intine

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):	The presence of more than one nucleus in the tapetum increases the efficiency of nourishing the developing microspore mother cells.

In light of the above statement, choose the most appropriate answer from the options given below:

1.	(A) is True but (R) is False.
2.	(A) is False but (R) is True.
3.	Both (A) and (R) are True and (R) is the correct explanation of (A).
4.	Both (A) and (R) are True but (R) is not the correct explanation of (A).