In human females, meiosis-$II$ is not completed until
uterine implantation
birth
puberty
fertilisation.
$A$ : Middle piece of sperm is called powerhouse.
$R$ : It contains mitochondria.
In testis, the immature germ cells produce sperm by $...A...$ at puberty $...B...$ present on the inside wall of seminiferous tubules multiply by$ ...C..$. division and increase their number. Identify $A$,$B$ and $C$ from the above statement
Fertilization takes place in
Draw a labeled diagram of sperm.
Name the hormones involved in regulation of spermatogenesis.