Answer: Lung cancer.
- A Liver cancer
- B Stomach cancer
- C Lung cancer
- D Bone cancer
Correct answer: C. Lung cancer
Explanation: Tobacco smoking is the leading cause of lung cancer, responsible for ~85% of cases. Tobacco smoke contains carcinogens (PAHs, nitrosamines, benzene). Smoking also causes cancers of mouth, throat, oesophagus, bladder, kidney, and pancreas.
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.