The function of flame cell is :

Options

A. Respiration
B. Digestion
C. Reproduction
D. Excretion

Answer

### Step-by-Step Solution:

1. **Understanding Flame Cells**:
- Flame cells are specialized excretory cells found in certain simple freshwater invertebrates, particularly in flatworms.

2. **Identifying the Function**:
- The primary function of flame cells is related to excretion. They play a crucial role in the removal of waste materials from the organism's body.

3. **Mechanism of Action**:
- Flame cells function similarly to kidneys. They filter waste materials and excess water from the body, helping to maintain osmotic balance and remove harmful substances.

4. **Evaluating the Options**:
- The question provides four options: Respiration, Digestion, Reproduction, and Excretion.
- Since we have established that flame cells are involved in excretion, we can eliminate the first three options as they do not pertain to the function of flame cells.

5. **Conclusion**:
- The correct answer is that the function of flame cells is excretion, specifically in removing excess water and waste materials from the body.

### Final Answer:
The function of flame cells is **Excretion**.

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