Ovulation in mammals refers to
Release of ovum from ovary
Formation of primary oocyte in ovary
Degeneration of unfertilized ovum
Fertilization of mature ovum
The secondary spermatocytes undergo the second meiotic division to produce four equal,
What is the difference between a primary oocyte and a secondary oocyte ?
Ejaculation of human male contains about $200 -300$ million sperms, of which for normal fertility ____ $\%$ sperms must have normal shape and size and at least ____$\%$ must show energetic motility.
$A$ : In spermatogenesis, the first haploid forms are spermatids.
$R$ : All the end of meiosis cells have haploid set of chromosomes.
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: