Fowl pox is caused by

Options

A. ectoparasites
B. endoparasites
C. bacteria
D. virus

Answer

**Step-by-Step Solution:**

1. **Understanding Fowl Pox**: Fowl pox is a disease that affects birds, particularly poultry. It is important to recognize that it has a specific classification in terms of its causative agent.

2. **Identifying the Causative Agent**: The question provides four options: ectoparasite, endoparasite, bacteria, and virus. To determine the correct answer, we need to understand what each term means:
- Ectoparasite: An organism that lives on the outside of a host (e.g., lice, fleas).
- Endoparasite: An organism that lives inside a host (e.g., tapeworms).
- Bacteria: Single-celled microorganisms that can cause diseases.
- Virus: A microscopic infectious agent that can only replicate inside the living cells of an organism.

3. **Recognizing Symptoms and Transmission**: Fowl pox is characterized by the appearance of blisters on the body of affected birds. The disease is transmitted by mosquitoes, which are known vectors for various viral infections.

4. **Conclusion**: Given that fowl pox is described as a viral disease (similar to diphtheria), and considering the symptoms and transmission method, we conclude that the causative agent of fowl pox is a virus.

5. **Final Answer**: Therefore, the correct answer to the question "Fowl pox is caused by" is option number four: **virus**.

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