Hatching of Ancylostoma occurs in

Options

A. Water
B. Moist soil
C. Inside human body
D. Secondary host

Answer

### Step-by-Step Solution:

1. **Identify the Organism**: The organism in question is Ancylostoma, specifically Ancylostoma duodenale, which is a parasitic nematode.

2. **Understand the Life Cycle**: Ancylostoma lays eggs that are expelled from the host's body through feces. These eggs are crucial for the next stage of the life cycle.

3. **Egg Development**: Once the eggs are in the environment, they require specific conditions to hatch. The eggs must be deposited in warm and moist soil.

4. **Hatching Process**: The eggs hatch into larvae within 1 to 2 days under optimal conditions. The larvae that emerge are initially non-infective.

5. **Larval Development**: The hatched larvae continue to develop in the soil for about 5 to 10 days, during which they mature into the infective form known as the filariform larvae.

6. **Infection Route**: The infective larvae can penetrate human skin, typically through hair follicles, allowing them to enter the human body and migrate through the lymphatic system.

7. **Conclusion**: Therefore, the hatching of Ancylostoma occurs in moist soil.

### Final Answer:
The hatching of Ancylostoma occurs in moist soil.

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