Endometrium is found in
Placenta of mammals
Nipple of mammals
Uterus of mammals
None of these
Identify $A, B, C$ and $D$ in the figure given below
Identify the stages $A$ and $B$; and what is the correct labelling of $C$
Choose the correct option
$A$$\quad$$B$$\quad$$C$$\quad$$D$
What helps in the penetration of egg by the sperm
Blastodisc or germinal disc refers to the protoplasm of egg, this is restricted to small area in
The cyclic period of sexual activity in non-human female mammals is called