Question

Filariasis is caused by?

Hint:

Filariasis is a tropical disease caused by parasitic nematodes, and it is transmitted by mosquitoes.

Answer 1

Step 1: Understanding filariasis.
Filariasis is a disease caused by filarial worms, which are parasitic nematodes. These worms are transmitted to humans through the bite of infected mosquitoes. Common filarial worms include *Wuchereria bancrofti*, *Brugia malayi*, and *Brugia timori*.
Step 2: Conclusion.
Thus, filariasis is caused by parasitic filarial nematodes.

Answer 2

Step 1: Filariasis is a disease caused by tiny parasitic worms called filarial worms (nematodes).

Step 2: These worms spread to people through the bite of an infected mosquito.

Step 3: Common culprits include Wuchereria bancrofti, Brugia malayi, and Brugia timori.

Answer 3

Identifying filariasis by its transmission route.
Filariasis spreads only when an infected mosquito bites a person and injects immature worm larvae into the bloodstream; these larvae then grow into thread-like adult worms that block the lymphatic vessels. Since the disease is defined by this worm life cycle rather than by a bacterium or virus, filariasis is caused by parasitic filarial nematodes such as Wuchereria bancrofti and Brugia malayi.