The birth control device not used by women is:

Vasectomy prevents $.........$.

What is true about 'Saheli'?
$I$. Developed at $CDRI$,Lucknow
$II$. Contains a steroidal preparation
$III$. 'Once-a-week' pill
$IV$. Many side effects
$V$. High contraceptive value
$VI$. Very few side effects
$VII$. Low contraceptive value

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?

$A$ sterilisation technique in females which blocks gamete transport and thereby prevents conception is

In lactational amenorrhoea,there is no ovulation or menstruation during the period of intense lactation following parturition,due to high levels of prolactin,which: