Which is the intermediate host of Hookworm ?

Options

A. Snail
B. Sand fly
C. Mosquito
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Hookworm**: Begin by recognizing that hookworms are parasitic worms that primarily infect humans. They belong to the group of nematodes and are known to cause hookworm disease.

2. **Identifying Hosts**: In parasitology, hosts are categorized into definitive hosts and intermediate hosts. The definitive host is where the parasite reaches maturity and reproduces, while the intermediate host is necessary for the parasite's development but does not reach maturity.

3. **Definitive Host of Hookworm**: For hookworms, the definitive host is humans. This means that humans are the primary organisms in which hookworms complete their life cycle.

4. **Assessing the Need for Intermediate Hosts**: It is important to note that hookworms do not require an intermediate host to complete their life cycle. They can directly infect humans through skin penetration by larvae present in contaminated soil.

5. **Evaluating the Options**: The question provides four options: snail, sand fly, mosquito, and none of the above. Since hookworms do not have an intermediate host, we can eliminate the first three options.

6. **Conclusion**: Based on the information gathered, the correct answer to the question "Which is the intermediate host of hookworm?" is "none of the above."

**Final Answer**: None of the above.

---