Question

in 60 percent of angiosperms, the pollen grains

Options:
Are shed at 2 celled stage

Lack generative cell

Have 2 male gametes

Have vegetative cell only

Answer 1

in 60 percent of angiosperms, the pollen grains  are shed at 2 celled stage

Answer 2

ANSWER:

In 60 percent of angiosperms, the pollen grains have 2 male gametes.

EXPLANATION:

Pollen grain divides through an unequal type of mitotic division and gives two cells.  Each pollen grain in angiosperm has two type of cell one of them is generative cell and another is vegetative cell.

About 60% of angiosperms shed in two-celled stage. It is very complex process. In requires coordination of different cells.  The outer part of pollen is known as exine. The main role of pollen is to develop the stamen.