Chemical which absorbs light energy and changes it to chemical energy is

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a chemical that absorbs light energy and converts it into chemical energy. This process is essential in photosynthesis, where plants convert light energy into food.

2. **Identifying Photosynthetic Pigments**: Photosynthetic pigments are chemicals that can absorb light energy. The main pigments involved in photosynthesis are chlorophylls, which include chlorophyll A and chlorophyll B.

3. **Analyzing the Options**:
- **Xanthophyll**: This is an accessory pigment that helps in capturing light energy but does not primarily convert it into chemical energy. It mainly imparts color to fruits and vegetables.
- **Chlorophyll A**: This is the primary pigment responsible for absorbing light energy and converting it into chemical energy during photosynthesis. It plays a crucial role in the process.
- **Chlorophyll B**: This pigment also assists in photosynthesis by capturing light energy but is not the main pigment. It works alongside chlorophyll A.
- **Chlorophyll C**: This is considered an accessory pigment and is not present in all photosynthetic organisms. It does not primarily convert light energy into chemical energy.

4. **Conclusion**: Among the options provided, chlorophyll A is the most significant pigment that absorbs light energy and converts it into chemical energy. Therefore, the correct answer is **Chlorophyll A**.

**Final Answer**: Chlorophyll A

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