The pathogen causing African sleeping sickness belongs to

Options

A. Annelida
B. Arthropoda
C. Mollusca
D. Protoza

Answer

**Step-by-Step Solution:**

1. **Identify the Disease**: The question asks about the pathogen that causes African sleeping sickness. This disease is known to be transmitted by a specific vector.

2. **Identify the Pathogen**: The pathogen responsible for African sleeping sickness is identified as Trypanosoma brucei. This organism is a type of protozoan.

3. **Understanding the Vector**: The transmission of Trypanosoma brucei occurs through the bite of the Tsetse fly. The Tsetse fly acts as a vector, carrying the pathogen from one host to another.

4. **Classifying the Pathogen**: To classify the pathogen, we need to understand its biological classification. Trypanosoma brucei is a unicellular organism that falls under the kingdom Protista, specifically within the phylum Protozoa.

5. **Conclusion**: Therefore, the pathogen causing African sleeping sickness belongs to the group of organisms known as protozoa.

**Final Answer**: The pathogen causing African sleeping sickness belongs to the group Protozoa.

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