Question:
Which of the following micro-organism is responsible for causing sleeping sickness?
Which of the following micro-organism is responsible for causing sleeping sickness?
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Sleeping sickness is caused by the protozoan parasite Trypanosoma brucei, which is transmitted by the tsetse fly.
Updated On: May 18, 2026
- Bacteria
- Virus
- Fungi
- Protozoa
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The Correct Option is D
Solution and Explanation
Concept:
Sleeping sickness is also known as African trypanosomiasis. It is a parasitic disease caused by a protozoan parasite.
Step 1: Identify the disease.
Sleeping sickness is caused by the parasite: \[ \textit{Trypanosoma brucei} \]
Step 2: Identify the type of organism.
Trypanosoma belongs to protozoa. Protozoa are unicellular eukaryotic organisms.
Step 3: Vector of sleeping sickness.
Sleeping sickness is transmitted by the bite of the tsetse fly. \[ \text{Tsetse fly} \rightarrow \text{Transmission of Trypanosoma} \]
Step 4: Check the options.
Bacteria do not cause sleeping sickness.
Virus does not cause sleeping sickness.
Fungi do not cause sleeping sickness.
Protozoa cause sleeping sickness. Therefore, the responsible micro-organism is: \[ \text{Protozoa} \] \[ \therefore \text{Correct Answer is (D)} \]
Sleeping sickness is also known as African trypanosomiasis. It is a parasitic disease caused by a protozoan parasite.
Step 1: Identify the disease.
Sleeping sickness is caused by the parasite: \[ \textit{Trypanosoma brucei} \]
Step 2: Identify the type of organism.
Trypanosoma belongs to protozoa. Protozoa are unicellular eukaryotic organisms.
Step 3: Vector of sleeping sickness.
Sleeping sickness is transmitted by the bite of the tsetse fly. \[ \text{Tsetse fly} \rightarrow \text{Transmission of Trypanosoma} \]
Step 4: Check the options.
Bacteria do not cause sleeping sickness.
Virus does not cause sleeping sickness.
Fungi do not cause sleeping sickness.
Protozoa cause sleeping sickness. Therefore, the responsible micro-organism is: \[ \text{Protozoa} \] \[ \therefore \text{Correct Answer is (D)} \]
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