In Balanoglossus, the mouth is present

Options

A. at the tip of proboscis
B. in between the proboscis and collar
C. in the collar
D. in the trunk

Answer

**Step-by-Step Solution:**

1. **Understanding Balanoglossus**: Balanoglossus is a marine organism that belongs to the group of hemichordates. Its body is divided into three main parts: the proboscis, the collar, and the trunk.

2. **Identifying the Body Parts**:
- **Proboscis**: The anterior part of the body, which is often elongated and used for feeding.
- **Collar**: The middle section that follows the proboscis.
- **Trunk**: The posterior section of the body.

3. **Location of the Mouth**: The mouth of Balanoglossus is described as wide and circular. It is located on the ventral side of the organism.

4. **Determining the Exact Position**: The mouth is situated specifically between the proboscis and the collar. This means it is not at the tip of the proboscis, nor is it located in the collar or the trunk.

5. **Conclusion**: Based on the anatomical structure of Balanoglossus, the correct answer to the question is that the mouth is present in between the proboscis and the collar.

**Final Answer**: The mouth in Balanoglossus is present in between the proboscis and collar (Option B).

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