Euglenoids have a protein rich layer called____which makes their body flexible.

Answer

**Step-by-Step Solution:**

1. **Understanding Euglenoids**: Euglenoids are a group of microorganisms that belong to the kingdom Protista. They are primarily single-celled and flagellated.

2. **Characteristics of Euglenoids**: One of the main characteristics of euglenoids is that they lack a rigid cell wall, which is common in many other types of cells. Instead, they possess a unique structure that provides flexibility.

3. **Identifying the Protein-Rich Layer**: The protein-rich layer that provides flexibility to the body of euglenoids is known as the "pellicle." This layer is crucial for maintaining the shape of the cell and allows for movement.

4. **Function of the Pellicle**: The pellicle not only helps maintain the shape of the euglenoid but also contributes to its flexibility, enabling it to adapt to different environments and move effectively.

5. **Conclusion**: Therefore, the answer to the question is that euglenoids have a protein-rich layer called **pellicle**, which makes their body flexible.

**Final Answer**: Pellicle

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