Graafian follicles are produced by the ovary by the process of

Female gametes are also called

Match the items in Column-$I$ with Column-$II$ and choose the correct option:

Column-$I$	Column-$II$
$a)$ Acrosome	$i)$ Contains numerous mitochondria which produce energy
$b)$ Head	$ii)$ Facilitates sperm motility
$c)$ Middle piece	$iii)$ Filled with enzymes that help in fertilization
$d)$ Tail	$iv)$ Contains elongated haploid nucleus

Identify the cells representing $P$,$Q$,$R$,and $S$ in the given schematic representation of spermatogenesis.

Given below are two statements:
Statement $I$:
The release of sperms into the seminiferous tubules is called spermiation.
Statement $II$:
Spermiogenesis is the process of formation of sperms from spermatogonia.
In the light of the above statements,choose the most appropriate answer from the options given below:

Transformation of a young follicle into a Graafian follicle is controlled by: