The unfertilized egg of a human contains,or when released from the ovary,the human egg contains:

Primordial Germ Cells $(PGC)$ are ...... .

Who discovered the human sperm?

The tertiary egg membrane is:

For ovulation,what is required for the reflex action of the ovum?

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: