The age of puberty in females is:

Categorize the following animals into those exhibiting menstrual cycle and those exhibiting oestrous cycle.
$I -$ Monkeys,$II -$ Cows,$III -$ Sheep,$IV -$ Apes,$V -$ Humans,$VI -$ Rats,$VII -$ Deer,$VIII -$ Dogs,$IX -$ Tigers
$\text{Menstrual cycle} \quad \quad \quad \text{Oestrous cycle}$

Cessation of the menstrual cycle at the age of $50$ is called:

The menstrual cycle in a normal adult woman is of (in $days$)

Changes in $GnRH$ pulse frequency in females control the secretion of ..........

In girls, the first menstruation begins at puberty and is called .....