Microsporogenesis and Microgametogenesis — Prelims Questions

Which of the following statements about the tapetum is INCORRECT?

How many mitotic divisions are required for a single microspore to form two male gametes?

If a diploid plant has 20 chromosomes ($2n=20$), what is the chromosome number in its microspore and generative cell, respectively?

The exine of a pollen grain is composed of:

Which of the following is the correct sequence of events during microsporogenesis and microgametogenesis?

A typical angiosperm anther is: