In the gametophytic phase,which of the following occurs?

Which of the following statements is true?

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

In which plant was the pollen tube discovered by $G.B.M.C.$?

Study the following statements and select the correct option:
$(i)$ Tapetum nourishes the developing pollen grains.
$(ii)$ Hilum represents the junction between the ovule and the funicle.
$(iii)$ In aquatic plants such as Water hyacinth and Water lily,pollination occurs by water.
$(iv)$ The primary endosperm nucleus is haploid.

Explain post-fertilization events.