Which one of the following does not play any role in photosynthesis

Options

A. Phycocyanin
B. Phycoerythrin
C. Anthocyanin
D. Xanthrophyll.

Answer

To determine which of the following does not play a role in photosynthesis, we need to analyze the given options regarding their involvement in the process of photosynthesis.

### Step-by-Step Solution:

1. **Identify the Options**: We need to look at the pigments mentioned in the options and their roles in photosynthesis.

2. **Phycocyanin**: This pigment is found in cyanobacteria (blue-green algae) and is involved in photosynthesis. Therefore, it plays a role in the process.

3. **Phycoerythrin**: This pigment is commonly found in red algae and is also involved in photosynthesis. Thus, it plays a role in the process.

4. **Anthocyanin**: This pigment is a water-soluble pigment found in the vacuoles of plant cells. It does not participate in photosynthesis as it is not located in chloroplasts, where photosynthesis occurs. Instead, it contributes to the coloration of plants.

5. **Xanthophyll**: This is an accessory pigment found in green plants and plays a role in photosynthesis by capturing light energy and transferring it to chlorophyll.

6. **Conclusion**: Based on the analysis, the pigment that does not play a role in photosynthesis is **Anthocyanin**.

### Final Answer:
The pigment that does not play any role in photosynthesis is **Anthocyanin**.

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