Placenta acts as an
Endocrine gland
Exocrine gland
Apocrine gland
Merocrine gland
Trace the correct path of movement of the sperms upto urethra
In Pheretima mouth develops from which of the following
$A$ : After menopause the levels of blood gonadotropins will rise markedly.
$R$ : At the time of menopause all the ovarian follicles are converted into follicular atresia and the ovaries are not responding to the gonadotropins
The amniotic fluid is taken out with the help of surgical needle and separation of the embryo cells present in this fluid is done by
Epiboly is the process of