Insemination is
A sperm injection to increase male fertility
A cure of male infertility
Inability of male to produce sperms
The transfer of sperms by male in to the genital tract of female
Spermatogonia undergo ....... to produce spermatozoa
How many ova and sperms would be produced from $100$ secondary oocytes and $100$ secondary spermatocytes during gametogenesis in human
Ovulation in mammals refers to
The figure given below shows the sectional view of ovary. Select the option which gives correct identification of marked structure ( $A$ to $D$ ) and its feature.
Give scientific reasons : The spermatids are transformed into spermatozoa by the process called spermiogenesis.