What is the number of sperms present in a single ejaculation of semen?

Which temporary endocrine gland is formed in the ovary after ovulation?

The layer of cells immediately surrounding the ovum but outside the zona pellucida is called:

Give scientific reasons: The spermatids are transformed into spermatozoa by the process called spermiogenesis.

Which hormone stimulates the development of the corpus luteum?

$.....P.....$ undergo meiosis to form sperms. $.....Q.....$ provide nutrition to the germ cells.
Choose the correct option for $P$ and $Q$.
$\quad\quad\quad\quad P \quad\quad\quad Q$