Acrosome is the modified
Mitochondria
Lysosome
Golgi body
Nucleus
$A$ : In frog gray cresent is formed during fertilization.
$R$ : It is because the black granules move towards the point of entry of the sperm in animal half
The main function of tropho ectoderm in mammalian embryo is
Human eggs are
Why do all copulations not lead to fertilisation and pregnancy? The root cause is _________.
Extra embryonic membrane amnion is not found in amphibians because