Answer: Morphine/Heroin (Opioids).
- 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.
The Plasmodium parasite needs both hosts: the female Anopheles mosquito injects sporozoites while biting (infecting the human liver and RBCs, causing the malaria fever cycle), then picks up gametocytes from an infected person's blood, completing the parasite's sexual stage inside the mosquito.
Concept context
Pathogens, infectious diseases, non-infectious diseases, drugs, cancer, and public health. High NEET importance.