In earthworm ovaries are attached at the inter-segmental septum of -

Options

A. 12th & 14th segments
B. 12th & 13th segments
C. 13th & 14th segments
D. 14th & 15th segment

Answer

To solve the question regarding the attachment of ovaries in earthworms at the inter-segmental septum, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Anatomy of Earthworms**:
- Earthworms have a segmented body structure, and each segment has specific organs and structures.

2. **Identifying the Location of Ovaries**:
- The ovaries in earthworms are small, white, and lobulated in structure. They are found in pairs.

3. **Determining the Segment Numbers**:
- The question asks about the inter-segmental septum where the ovaries are attached.
- It is important to note that the ovaries are located on the 13th segment of the earthworm.

4. **Understanding Inter-segmental Septum**:
- The inter-segmental septum is the partition between two segments. In this case, the ovaries are attached to the septum between the 12th and 13th segments.

5. **Conclusion**:
- Therefore, the correct answer to the question is that the ovaries are attached at the inter-segmental septum of the 12th and 13th segments.

### Final Answer:
The ovaries in earthworms are attached at the inter-segmental septum of the 12th and 13th segments.

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