Which of the following represents a condition, where the motility of the sperms is highly reduced?
Oligospermia
Asthenospermia
Azoospermia
Poolyspermy
The term blastocyst is applied to the blastula of which one of the following
Location and secretion of leyding cells are
Which one of the following is the incorrect match of the events occurring during menstrual cycle?
The gestation period of rabbit is
How many cleavages are completed in $16$ celled stage of egg.