Branched type of pollen tube is formed in

Explain post-fertilization events. Describe the steps of post-fertilization.

How many meiotic divisions are required for the formation of $200$ seeds in Capsella?

In angiosperms,microsporogenesis and megasporogenesis

Differentiate between microsporogenesis and megasporogenesis. Which type of cell division occurs during these events? Name the structures formed at the end of these two events.

Identify each part in a flowering plant and write whether it is haploid $(n)$ or diploid $(2n)$.
$(a)$ Ovary . . . . . .
$(b)$ Anther . . . . . .
$(c)$ Egg . . . . . .
$(d)$ Pollen . . . . . .
$(e)$ Male gamete . . . . . .
$(f)$ Zygote . . . . . .