Choose the correct option for human reproduction.

Give differences between:
$(A)$ Spermatogenesis and Oogenesis
$(B)$ Embryo development and Foetus development

In mammals,the egg is microlecithal and alecithal because they are.....

High-pitched voice is a characteristic of which of the following?

Match the hormones listed in List-$I$ with their functions indicated in List-$II$:

List-$I$	List-$II$
$(a)$ $FSH$	$(i)$ Prepares endometrium for implantation
$(b)$ $LH$	$(ii)$ Develops female secondary sexual characters
$(c)$ Progesterone	$(iii)$ Induces uterine wall contraction
$(d)$ Estrogen	$(iv)$ Development of corpus luteum
	$(v)$ Maturation of Graafian follicle

Identify True/False statements. Correct each false statement to make it true.
$(a)$ Androgens are produced by Sertoli cells. (True/False)
$(b)$ Spermatozoa get nutrition from Sertoli cells. (True/False)
$(c)$ Leydig cells are found in ovary. (True/False)
$(d)$ Leydig cells synthesise androgens. (True/False)
$(e)$ Oogenesis takes place in corpus luteum. (True/False)
$(f)$ Menstrual cycle ceases during pregnancy. (True/False)
$(g)$ Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/False)