The artificial drug used as a sedative and to reduce the anxiety. It also induces the sleep. The drug is
$LSD$
Barbiturates
Heroin
Caffeine
A chemical substance produced by a microorganism for inhibiting the growth of another is
Vaccination protects a person from disease because it
It is hallucinogenic plant.
Identify correct group for primary lymphoidorgans
Which one of the following is a stimulant