Ascaris occurs in

Options

A. Stomach
B. Intestine
C. Rectum
D. Urinary bladder

Answer

**Step-by-Step Solution:**

1. **Understanding Ascaris**: Ascaris is a genus of parasitic worms, commonly known as roundworms. They are known to infect humans and other animals.

2. **Life Cycle of Ascaris**: The life cycle of Ascaris begins when a human ingests microscopic eggs. These eggs hatch in the small intestine.

3. **Migration of Larvae**: After hatching, the larvae migrate from the small intestine to the lungs. This migration typically takes about 6 to 10 days.

4. **Cough Reflex**: Once in the lungs, the larvae can cause a cough reflex, which helps them to travel back up to the throat.

5. **Maturation**: The larvae then move back to the small intestine, where they mature into adult worms.

6. **Habitat of Adult Worms**: The adult Ascaris worms primarily reside in the small intestine of their host, where they can live for several years.

7. **Conclusion**: Based on the information, Ascaris occurs in the small intestine of humans, making option number 2 the correct answer.

**Final Answer**: Ascaris occurs in the small intestine.

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