Larvae of Ascaris hatch out in

Options

A. Soil
B. Intestine
C. Liver
D. Lungs

Answer

To answer the question "Larvae of Ascaris hatch out in," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Ascaris**: Ascaris is a type of nematode, specifically a roundworm, that causes a disease known as Ascariasis. It primarily infects humans.

2. **Life Cycle of Ascaris**: The life cycle of Ascaris involves only one host, which is humans. The female Ascaris lays eggs in the human intestine.

3. **Egg Fertilization**: Inside the intestine, the eggs can be fertilized or unfertilized. Only the fertilized eggs are capable of developing further.

4. **Egg Release**: The fertilized eggs are released into the environment through human feces.

5. **Development in Soil**: The fertilized eggs reach the soil, where they undergo development due to favorable conditions like low temperature, high moisture, and sufficient oxygen.

6. **Juvenile Stages**: The development includes several juvenile stages. The first and second juvenile stages occur while the larvae are still inside the egg, which are referred to as embryonated eggs.

7. **Hatching Process**: The first molting occurs in the soil, leading to the formation of the first juvenile stage. After another molting, the second juvenile stage is formed.

8. **Infective Stage**: The second juvenile stage, known as the rabidity form larva, is the infective stage for humans. It is ingested through contaminated food or water.

9. **Hatching in the Intestine**: Once ingested, the larvae hatch out of the eggs in the human intestine. This is the critical point where the larvae emerge from the eggs.

10. **Migration**: After hatching, the larvae migrate to the lungs and undergo further development before returning to the intestine to mature into adult worms.

### Conclusion:
Based on the life cycle of Ascaris, the correct answer to the question is that the larvae of Ascaris hatch out in the **intestine**.

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