The function of typhlosole (between 26-35 segment) in earthworm is to

Options

A. secrete digestive juice
B. slow down rate of passage of food
C. increase absorptive area of intestinal epithelium
D. have no function

Answer

To solve the question regarding the function of typhlosole in earthworms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure**: The typhlosole is a fold of the intestinal wall found in earthworms, specifically located between segments 26 to 35.

2. **Identify the Functions of Typhlosole**: The primary functions of the typhlosole include:
- Increasing the surface area of the intestine.
- Enhancing the efficiency of nutrient absorption.

3. **Evaluate the Options**: The question provides four options regarding the function of the typhlosole:
- Option 1: Secrete digestive juice
- Option 2: Slow down the rate of passage of food
- Option 3: Increase absorptive area of intestinal epithelium
- Option 4: Have no function

4. **Analyze Each Option**:
- **Option 1** is incorrect because the typhlosole does not secrete digestive juices.
- **Option 2** is also incorrect as the primary role of the typhlosole is not to slow down food passage.
- **Option 3** is correct because the typhlosole indeed increases the absorptive area of the intestinal epithelium, facilitating better nutrient absorption.
- **Option 4** is incorrect since the typhlosole has a significant function.

5. **Conclusion**: Based on the analysis, the correct answer is Option 3: "Increase absorptive area of intestinal epithelium."

### Final Answer:
The function of typhlosole (between 26-35 segment) in earthworm is to increase the absorptive area of intestinal epithelium.

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