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

Match the hormones given in List-$1$ with their functions given in List-$2$.

List-$1$	List-$2$
$(a)$ Oxytocin	$(p)$ Stimulates ovulation
$(b)$ Prolactin	$(q)$ Maintenance of implantation and pregnancy
$(c)$ Luteinizing hormone	$(r)$ Milk secretion after childbirth
$(d)$ Progesterone	$(s)$ Uterine contraction during parturition
	$(t)$ Reabsorption of water by nephrons

Fertilisation of an egg cell means......
$(1)$ End of the process of oogenesis
$(2)$ Induces the completion of the second meiotic division
$(3)$ The corpus luteum degenerates
$(4)$ Signals for maintaining progesterone levels in the blood
$(5)$ Formation of a zygote

Match Column-$I$ with Column-$II$:

Column-$I$	Column-$II$
$(A)$ Mons pubis	$(1)$ Embryo formation
$(B)$ Antrum	$(2)$ Sperm
$(C)$ Trophectoderm	$(3)$ Female external genitalia
$(D)$ Nebenkern	$(4)$ Graafian follicle

At menopause,there is a rise in the urinary excretion of:

Secretion of progesterone by the corpus luteum is initiated by