Which part of $Papaver$ $somniferum$ yields opium?

Which part of the brain is affected first by alcohol consumption?

Which of the following drugs is used to dilate the pupil?

Identify the correct statements regarding drugs and their characteristics:
$(1)$ $Datura$ induces hallucinogenic properties.
$(2)$ $Atropa$ $belladonna$ induces hallucinations.
$(3)$ Opium is obtained from the unripe capsules of the poppy plant.
$(4)$ Marijuana is obtained from $Cannabis$ $sativa$.
$(5)$ $LSD$ is useful as a medicine.

$A$ man was suffering from mental illness like depression and insomnia. Identify the drug which is normally used as medicine in such cases.

Which of the following effects is $NOT$ caused by smoking?