In earthworm second layer of body wall is made up of-

Answer

To answer the question about what the second layer of the body wall in an earthworm is made up of, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Layers of the Earthworm's Body Wall**:
- The body wall of an earthworm consists of multiple layers. The first layer is the outermost layer, which is made up of ectodermal epithelial cells.

2. **Determine the Composition of the Second Layer**:
- The second layer of the body wall is located beneath the ectodermal epithelial cells. According to the information provided, this layer is made up of columnar epithelial cells.

3. **Understand the Function of the Second Layer**:
- The columnar epithelial cells in the second layer are larger cells that play a role in the structure and function of the earthworm's body wall.

4. **Summarize the Findings**:
- Therefore, the second layer of the body wall in an earthworm is made up of columnar epithelial cells.

### Final Answer:
The second layer of the body wall in an earthworm is made up of columnar epithelial cells.

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