Answer: cell-mediated immunity.
- A humoral immunity
- B innate barriers
- C cell-mediated immunity
- D passive immunity
Correct answer: C. cell-mediated immunity
Explanation: Graft rejection is driven by cell-mediated immunity involving T-lymphocytes, which recognise the transplanted tissue as foreign. Tissue matching reduces the risk of rejection.
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.