Question

Which one of the following causes kala-azar?

• A. Ascaris
• B. Trypanosoma
• C. Leishmania
• D. Bacteria

Answer 1

The correct option is C

Leishmania

The correct option is C: Leishmania

Explanation of the correct option:

1. Leishmania donovani is a member of the Leishmania sp. parasites are responsible for causing kala-azar.
2. The vector for the disease is the sandfly.

Explanation of the incorrect options:

Option A

Ascaris is a parasitic worm responsible for causing ascariasis in the host tissue.

Option B

Trypanosoma is a parasite responsible for causing trypanosomiasis or sleeping sickness.

Option D

Bacteria are pathogenic microbes that cause a wide variety of diseases like typhoid, cholera, botulism, tuberculosis, Diptheria, and tetanus.

Final Answer: Leishmania causes kala-azar.