Identify the wrong statement regarding earthworm

Options

A. The first body segment is called peristomium
B. Prostomium contains the mouth
C. Clitellum is made up of glandular tissue
D. Prostomium is sensory in function

Answer

To identify the wrong statement regarding earthworms, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding the First Statement: "The first body segment is called peristomium."**
- The first body segment of an earthworm is indeed called the peristomium. This segment contains the mouth. Therefore, this statement is **correct**.

2. **Understanding the Second Statement: "Prostomium contains the mouth."**
- The prostomium is a segment located anterior to the peristomium and does not contain the mouth. The mouth is located in the peristomium. Thus, this statement is **incorrect**.

3. **Understanding the Third Statement: "Clitellum is made up of glandular tissue."**
- The clitellum is a thickened, glandular section of the earthworm's body that plays a role in reproduction. It is indeed made up of glandular tissue. Therefore, this statement is **correct**.

4. **Understanding the Fourth Statement: "Prostomium is sensory in function."**
- The prostomium serves a sensory function, helping the earthworm to sense its environment. This statement is also **correct**.

### Conclusion:
Based on the analysis, the wrong statement regarding earthworms is: **"Prostomium contains the mouth."** This is the only incorrect statement among the options provided.

### Final Answer:
The wrong statement is: **"Prostomium contains the mouth."**

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