- A Cannabis, derived from the hemp plant
- B Cocaine, derived from the coca plant
- C Morphine/Heroin (Opioids)
- D Amphetamine, a synthetic stimulant drug
Correct answer: C. Morphine/Heroin (Opioids)
Explanation: Morphine and heroin are opioids obtained from the opium poppy (Papaver somniferum). They bind to opioid receptors, causing pain relief and euphoria. Highly addictive; overdose causes respiratory depression and death.
Concept context
Pathogens, infectious diseases, non-infectious diseases, drugs, cancer, and public health. High NEET importance.