Composition of semen is

$A.$ Humans reproduce .....
$B.$ Humans are $\ldots \ldots$
$C.$ Fertilization is .... in humans
$D.$ Male and female gametes are .....
$E.$ Zygote is .....
$F.$ The process of release of ovum from a mature follicle is called .....
$G.$ Ovulation is induced by a hormone called ......
$H.$ The fusion of male and female gametes is called .......
$I.$ Zygote divides to form ... which is implanted in the uterus
$J.$ The structure which provides vascular connection between the foetus and uterus is called ......
Fill in the blanks in the statements $A$ to $J$ above.

Oestrus cycle is seen in

Which two events in the life cycle maintain the same (constant) number of chromosomes?

Choose the correct pair -

The given figure shows a longitudinal section of the female reproductive system. Which three parts among $A-F$ are correctly identified?