After gastrulation the roof of archenteron is formed by
Neural plate
Mesoderm
Ectoderm
Chorda-mesoderm
From where spermatogenesis starts ?
Vaginal orifice, urethral orifice are open in
Ovum receives the sperm in the region of
Human eggs are
The corpus luteum secretes progesterone which negatively feeds back and inhibits the release of