Which one of the following correctly matched regarding earthworm ?

Options

A. Buccal cavity - 1st to 5th segment
B. Stomach - 11th to 12th segment
C. Typhlosole - between 26th to 35th segment
D. Testes - 10th to 14th segment

Answer

**Step-by-Step Solution:**

1. **Understand the Anatomy of Earthworm**:
- Earthworms have a segmented body structure. Each segment has specific organs and functions.

2. **Identify the Options**:
- The options provided include P.O. (presumably referring to the pharyngeal opening), Buccal Cavity, Stomach, Typhlosol, and Testes.

3. **Analyze Each Option**:
- **P.O. (Pharyngeal Opening)**: This is the opening that leads to the digestive tract.
- **Buccal Cavity**: This is the cavity in the mouth where food is taken in.
- **Stomach**: In earthworms, there is no true stomach; instead, they have a crop and gizzard for digestion.
- **Typhlosol**: This is a fold of the intestinal wall that increases the surface area for absorption.
- **Testes**: These are the male reproductive organs found in specific segments.

4. **Match Each Term with Its Correct Segment**:
- **P.O.**: Located in the first segment.
- **Buccal Cavity**: Also in the first segment.
- **Stomach**: Not applicable as earthworms do not have a stomach.
- **Typhlosol**: Found in the intestinal segments.
- **Testes**: Located in the reproductive segments.

5. **Identify the Correct Match**:
- The correct match is **Typhlosol** as it is specifically related to the digestive system of the earthworm and is found in the intestinal segments.

6. **Conclusion**:
- The option that is correctly matched regarding the earthworm is **Typhlosol**.