What is the process of yolk synthesis called?

The process of maturation of reproductive cells of testes in males to form the male gamete or sperm is known as

In human female,the process of oogenesis is completed . . . . . . .

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:

The acrosome of a sperm is formed from:

In the absence of an acrosome,the sperm . . . . . .