Typhlosole found in pheretima occurs in

Options

A. Oesophagus
B. Stomach
C. Gizzard
D. Intestine

Answer

### Step-by-Step Solution:

1. **Identify the Organism**: The question refers to "Pheretima," which is commonly known as the earthworm. Its scientific name is *Pheretima posthuma*.

2. **Understand the Structure Involved**: The question specifically asks about "typhlosole." The typhlosole is an internal fold found in the intestine of certain invertebrates, including earthworms.

3. **Locate the Typhlosole**: In the earthworm, the typhlosole is present in the intestinal region. It is a median fold of the dorsal wall of the intestine.

4. **Function of the Typhlosole**: The primary function of the typhlosole is to increase the surface area for absorption of nutrients in the intestine. This adaptation is crucial for the efficient absorption of digested food.

5. **Clarify Incorrect Options**: The typhlosole is not found in other parts of the digestive system such as the esophagus, stomach, or gizzard. It is specifically located in the intestine.

6. **Conclusion**: Therefore, the correct answer to the question is that the typhlosole found in *Pheretima* occurs in the intestine.