In women,the cessation of menstruation occurs at the age of:

The following graph shows the 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 $D$.

The menstrual cycle is typically completed in:

At which phase of the menstrual cycle does the Graafian follicle transform into the corpus luteum?

Arrange the events of the menstrual cycle in the order they occur:
$I.$ Secretion of $FSH$
$II.$ Growth of corpus luteum
$III.$ Growth of follicle and oogenesis
$IV.$ Ovulation
$V.$ Sudden increase in the level of $LH$

Which hormone level is required for ovulation in females?