Which substance is obtained from the unripe fruit of $Papaver somniferum$?

Which of the following pairs is correctly matched?

The following symptoms are characteristic of withdrawal syndrome:
$I -$ Anemia $\quad II -$ Anxiety
$III -$ Tremors $\quad IV -$ Nausea
$V -$ Cancer $\quad VI -$ Sweating

Which of the following substances inhibits brain activity and produces feelings of relaxation,drowsiness,and calmness?

Which of the following is considered the most addictive drug?

What effects does the drug marijuana induce?