Answer: Wuchereria bancrofti.
- A Wuchereria bancrofti
- B Ascaris lumbricoides
- C Entamoeba histolytica
- D Plasmodium vivax
Correct answer: A. Wuchereria bancrofti
Explanation: The filarial worms Wuchereria bancrofti and W. malayi live in the lymphatic vessels and cause chronic inflammation, leading to elephantiasis. They are transmitted by female Culex mosquitoes.
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.