What do you mean by the term spermateleosis?

Which part of the ovary in mammals acts as an endocrine gland after ovulation?

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 temporary endocrine gland is formed in the ovary after ovulation?

What are the supporting cells found in the germinal epithelium of the testes called?

How many secondary spermatocytes are required to form $400\,million$ spermatozoa?