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.
Cause of decline of population in $1927$ was
Which of the following statements about hepatitis$-B$ is incorrect?
$A$ : Inability to conceive or produce children even after $2 \;years$ of unprotected sexual cohabitation is infertility.
$R$ : In vitro fertilization followed by transfer of embryo into the female genital tract is ‘Test Tube Baby’ programme
In vivo fertilisation involves the fertilisation that takes place