Pollen grains are formed in:

What are the gametes of angiosperms like?

Identify the correct statement among the following.

Consider the following statements and choose the correct answer from the given options.
$Statement \ 1$: Innermost layer of microsporangium is tapetum.
$Statement \ 2$: Cells of tapetum possess dense cytoplasm, more than one nucleus, and nourish the developing pollen grains.

The whorl that produces male gametes is:

Which one of the following is surrounded by a callose wall?