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

In a flowering plant, archesporium gives rise to:

1. Only the wall of the sporangium

2. Both wall and the sporogenous cells

3. Wall and the tapetum

4. Only tapetum and sporogenous cells

In grasses what happens in microspore mother cell for the formation of mature pollen grains:
1.  One meiotic and two mitotic divisions
2.  One meiotic & one mitotic division
3.  One meiotic division
4.  One mitotic division