Ceasation of menstrual cycle at the age of $50$ is called
Ovulation
Gametogenesis
Gametogenesis
Menopause
Hysterectomy is surgical removal of
The following graph of relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. Identify the hormones $A, B, C$ and $D$
When mouth develops from blastopore, the organism is called
Middle gastrula is characterised by
The rule of embryonic development was given by