The eggs of an elephant are:

Match the columns.

Column-$I$	Column-$II$
$(a)$ Parturition	$(p)$ Attachment of embryo to endometrium
$(b)$ Gestation	$(q)$ Release of egg from Graafian follicle
$(c)$ Ovulation	$(r)$ Delivery of Foetus from uterus
$(d)$ Implantation	$(s)$ Duration between pregnancy and birth
	$(t)$ Formation of zygote by fusion of egg and sperm

$A$ female of $24$ years age attained puberty at the age of $14$ years. She has two children born by normal delivery. How many polar bodies are formed in her body till date $($each $\text{M.C.}$ is of $30$ days$)$ :-

Secretion of progesterone by the corpus luteum is initiated by

Given below are the events in human reproduction. Write them in correct sequential order: Insemination,gametogenesis,fertilisation,parturition,gestation,implantation.

Select the incorrect statement.