Choose the event that does not occur in photosynthesis.

Options

A. Absorption of light energy by chlorophyll
B. Reduction of carbon dioxide to carbohydrates
C. Oxidation of carbon to carbon dioxide
D. Conversion of light energy to chemical energy

Explanation

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is a process used by plants (autotrophs) to convert light energy into chemical energy. This process primarily occurs in the chloroplasts of plant cells.

2. **Key Components of Photosynthesis**: The essential ingredients for photosynthesis include carbon dioxide (CO2), water (H2O), and sunlight. Chlorophyll, the green pigment in plants, plays a crucial role in absorbing sunlight.

3. **Photosynthesis Process**: During photosynthesis, plants absorb light energy, which is then used to convert carbon dioxide and water into glucose (a carbohydrate) and oxygen (O2). The overall equation for photosynthesis can be summarized as:
\[ 6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6 + 6O_2 \]

4. **Analyzing the Options**: The question asks to identify which event does not occur during photosynthesis. We will evaluate each option:
- **Option A**: Absorption of light energy by chlorophyll - This occurs during photosynthesis.
- **Option B**: Reduction of carbon dioxide to carbohydrates - This also occurs as CO2 is converted into glucose.
- **Option C**: Oxidation of carbon to carbon dioxide - This does not occur in photosynthesis. Instead, carbon dioxide is reduced to form glucose.
- **Option D**: Conversion of light energy to chemical energy - This is a fundamental part of photosynthesis.

5. **Conclusion**: The only event that does not occur in photosynthesis is the oxidation of carbon to carbon dioxide (Option C).

Thus, the answer is **Option C**.

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