Causative organism of disease elephantiasis is a :

Options

A. Protozoan
B. Bacterium
C. Virus
D. Helminth

Answer

**Step-by-Step Solution:**

1. **Understanding the Disease**: The question asks about the causative organism of elephantiasis. Elephantiasis is a condition characterized by the extreme swelling of body parts, particularly the limbs and genitals.

2. **Identifying the Disease Name**: Elephantiasis is also known as filariasis. This name is important as it indicates the type of infection involved.

3. **Causative Organism**: The disease is caused by a parasitic worm. The specific organism responsible for causing elephantiasis is called Wuchereria bancrofti.

4. **Type of Parasite**: Wuchereria bancrofti is classified as a helminth, which is a type of parasitic worm. Helminths are large macroparasites that can be seen with the naked eye.

5. **Transmission**: The transmission of this disease does not occur directly from person to person. Instead, it is transmitted through the bite of infected mosquitoes, specifically the Culex species.

6. **Conclusion**: Therefore, the causative organism of elephantiasis is Wuchereria bancrofti, a helminth transmitted by mosquitoes.

**Final Answer**: The causative organism of elephantiasis is Wuchereria bancrofti.

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