Growth zone in annelids is located

Options

A. just before prostomium
B. just before peristomium
C. just in front of pygidium
D. any where in the body

Answer

**Step-by-Step Solution:**

1. **Understanding Annelids**: Annelids are segmented worms, which means their bodies are divided into multiple segments. Each segment can grow and develop independently.

2. **Identifying Key Parts**: In annelids, the main parts to consider are:
- **Prostomium**: The first segment, often referred to as the lid.
- **Peristomium**: The second segment, which is located just behind the prostomium and contains the mouth.
- **Pygidium**: The last segment, which is also known as the anus or tail region.

3. **Locating the Growth Zone**: The growth zone in annelids is the area where new segments are added. This zone is located just in front of the pygidium. This area is also referred to as the pre-anal zone.

4. **Conclusion**: Therefore, the growth zone in annelids is located just in front of the pygidium, where the new segments begin to form.

**Final Answer**: The growth zone in annelids is located just in front of the pygidium.

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