Accessory photosynthetic pigments in most green plants are

Options

A. chlorophyll a
B. chlorophyll b
C. carotenoids and xanthophylls
D. both b and c

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about the accessory photosynthetic pigments in most green plants.

2. **Understand Photosynthetic Pigments**: Photosynthetic pigments are compounds that absorb light energy for photosynthesis. The main pigments are chlorophylls, which are crucial for the process.

3. **Identify the Primary Pigment**: The primary photosynthetic pigment in most green plants is chlorophyll-a. It plays a vital role in the primary reactions of photosynthesis, converting light energy into chemical energy.

4. **Accessory Pigments**: In addition to chlorophyll-a, there are accessory pigments that help in capturing light energy. These include chlorophyll-b, carotenoids (like beta-carotene), and xanthophylls.

5. **Determine the Correct Answer**: The question specifically asks for the accessory pigments. While chlorophyll-a is essential, chlorophyll-b, carotenoids, and xanthophylls are considered accessory pigments that assist in photosynthesis by capturing additional light wavelengths.

6. **Conclusion**: The accessory photosynthetic pigments in most green plants include chlorophyll-b, carotenoids, and xanthophylls. However, chlorophyll-a is the primary pigment necessary for photosynthesis.

**Final Answer**: The accessory photosynthetic pigments in most green plants are chlorophyll-b, carotenoids, and xanthophylls.

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