Which photosynthetic pigment has maximum absorption peak in red range of visible light?

Options

A. Chlorophyll a
B. Chlorophyll b
C. Phycoerythrin
D. Xanthophyll

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which photosynthetic pigment has the maximum absorption peak in the red range of visible light.

2. **Identifying Photosynthetic Pigments**: The main photosynthetic pigments are chlorophyll A, chlorophyll B, phycoerythrin, and xanthophyll.

3. **Analyzing Chlorophyll A**: Chlorophyll A is known to be the primary pigment involved in photosynthesis. It has a significant absorption peak in the red range of visible light, specifically around 665-680 nm.

4. **Analyzing Chlorophyll B**: Chlorophyll B absorbs light primarily in the blue range (around 450-500 nm) and has a lower absorption peak in the red range compared to chlorophyll A.

5. **Analyzing Phycoerythrin**: Phycoerythrin is a pigment found in red algae and has absorption peaks in the green and blue ranges, but not in the red range.

6. **Analyzing Xanthophyll**: Xanthophyll is a type of carotenoid that primarily absorbs light in the blue and green ranges, and it does not have significant absorption in the red range.

7. **Conclusion**: After analyzing the absorption peaks of the different pigments, it is clear that chlorophyll A has the maximum absorption peak in the red range of visible light.

**Final Answer**: The photosynthetic pigment that has the maximum absorption peak in the red range of visible light is **Chlorophyll A**.

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