Surgical removal of testes is known as

Match the columns:

Column $I$	Column $II$
$(a)$ Physical method	$(p)$ Synthesized rubber or plastic cap
$(b)$ Diaphragms	$(q)$ Spermicidal substance
$(c)$ Chemical method	$(r)$ Condoms

Find the odd one out $w.r.t.$ Saheli.

In vasectomy,a small incision is made on the ....... and it is tied.

What is the purpose of contraceptive pills?
$I$. They inhibit ovulation and implantation
$II$. They alter the quality of cervical mucous to prevent or retard the entry of sperms
$III$. They prevent the ejaculated semen from entering the female vagina
$IV$. They inhibit spermatogenesis

Which of the following graphs is the correct representation of the level of progesterone in a female who has been using Mala-$D$ as a method of birth control?