Which option shows correctly matched pairs for Column-$I$ and Column-$II$?

Column-$I$ (Cell/Gland)	Column-$II$ (Function/Secretion)
$(p)$ Leydig cells	$(iii)$ Secretion of Androgens
$(q)$ Sertoli cells	$(iv)$ Provide nutrition to the sperm
$(r)$ Corpus luteum	$(ii)$ Secretion of progesterone
$(s)$ Bulbourethral gland	$(i)$ Help in the lubrication of the penis

In mammals,eggs are microlecithal and isolecithal because these are

Describe the location and function of the following: Placenta and Acrosome.

Identify the incorrect statement.

What is the oestrous cycle?

$A.$ 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.