Acrosome is the modified

Androgen binding protein which helps in concentrating testosterone in the seminiferous tubule, and which inhibits $ICSH$ secreted by anterior pituitary and $GnRH$ production by hypothalamus is secreted by

The foetal membrane which is the source of first blood corpuscle to enter the circulation of the embryo is called

The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is

Choose the correct combination of labelling the hormonal control of female reprodcutive system

An avian blastula is called