Question

Which one of the following diseases is caused by a nematode?

• A. Leprosy
• B. Filariasis
• C. Amoebiasis
• D. Poliomyelitis

Answer 1

The correct option is B

Filariasis

The correct option is B.

Explanation of correct option:

1. Nematodes are invertebrates with worm or parasite-like organisms.
2. Malaria is caused by the Filaria worm belonging to the phylum Nematoda.
3. It is spread by the bites of infected mosquitoes.
4. It affects lymphatic vessels and lymph nodes of the body of the infected person.

Explanation of incorrect options:

Option A:

1. Leprosy is caused by the bacterium Mycobacterium leprae.
2. It affects various parts of the body.

Option C:

1. Amoebiasis is caused by the protozoa Entamoeba histolytica.
2. The disease is contracted by consuming contaminated food and water.

Option D:

1. Poliomyelitis is caused by the polio virus.
2. It affects the lower limbs of the body.

Final answer: Filariasis is caused by a nematode.