Which of the following represents a condition, where the motility of the sperms is highly reduced?
Oligospermia
Asthenospermia
Azoospermia
Poolyspermy
Cells of leydig are found in
After ovulation the graafian follicle becomes an endocrine organ called
In early haemopoietic tissue of embryo, there is
Cockroach egg is called as
$A$ : Blastocyst undergoes gastrulation to produce the three germinal layers.
$R$ : This involves cell movements (morphogenetic movement) that eventually help to attain new shape and morphology of embryo