A single ejaculation contains $...A...$ to$...B..$. million spermatozoa. Semen has pH of $...C...$ to $...D....$ Its alkalinity helps to neutralize the acidity of urethra. Here $A,B, C$ and $D$ refers to
$\mathrm{A}-300, \mathrm{~B}-400, \mathrm{C}-8, \mathrm{D}-9$
$\mathrm{A}-200, \mathrm{~B}-300, \mathrm{C}-7.35, \mathrm{D}-7.50$
$\mathrm{A}-100, \mathrm{~B}-200, \mathrm{C}-5, \mathrm{D}-6$
$\mathrm{A}-150, \mathrm{~B}-200, \mathrm{C}-7, \mathrm{D}-8$
Sperms formed from $4$ primary spermatocytes are
In Spermiogenesis.........
The figure shows a section of human ovary. Select the option which gives the correct identification of either $A$ or $B$ with function/ characteristic.
The secondary spermatocytes undergo the second meiotic division to produce four equal,
What is the difference between a primary oocyte and a secondary oocyte ?