Which one of the following is the effect of higher $pH$ on the sperms
Sperms become sluggish with longer life
Sperms become less active with short life
Sperms become highly active with longer life
No effect
$A$ : Most birds possess only the left ovary and left oviduct for conveying the ovum released from the ovary.
$R$ : The avian ovary does not form a corpus luteum from the ruptured ovarian follicle which undergoes rapid shrinkage
Zonary placenta is found in
Hormone responsible for metamorphosis in tadpole is
The fluid filled in the blastocoel cavity of blastula is
In rabbit, ex-abdominal reproductive organs are