Total number of primordial follicles which remain in the ovary of human females at the time of puberty are . . . . . . .

During the process of spermiogenesis,the heads of the sperm become embedded in which of the following cells?

If $10$ primary oocytes produce $10$ ova,how many ova will be formed after the process of oogenesis?

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:

Where is the Graafian follicle found?

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