The production of offspring in humans by sexual reproduction includes the fusion of two gametes which are:

What is the function of $Sertoli$ cells?

Spermatogonia undergo a series of cell divisions to produce sperms. Select the correct statements from the following:
$A$. Spermatogonia always undergo meiotic cell division.
$B$. Primary spermatocytes divide mitotically to produce secondary spermatocytes.
$C$. Secondary spermatocytes, through their second meiotic division, produce spermatids.
$D$. Spermatids produce spermatozoa through mitosis.
$E$. Spermatids transform into spermatozoa by spermiogenesis.
Choose the correct answer from the options given below:

Which of the following is true regarding sperm?

What is the germinal epithelium composed of?

The germinal epithelium gives rise to: