Which one of the following is not a limiting factor for photosynthesis

Options

A. `O_(2)`
B. `CO_(2)`
C. Chlorophyll
D. Light.

Answer

To determine which of the following is not a limiting factor for photosynthesis, we need to analyze the options provided: oxygen, carbon dioxide, chlorophyll, and light.

### Step-by-Step Solution:

1. **Understanding Photosynthesis**:
- Photosynthesis is the process by which plants convert light energy into chemical energy, producing glucose and oxygen as by-products. The general equation for photosynthesis is:
\[ 6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6 + 6O_2 \]
- In this equation, carbon dioxide (CO2) and water (H2O) are reactants, while glucose (C6H12O6) and oxygen (O2) are products.

2. **Identifying Limiting Factors**:
- **Light**: Light is essential for photosynthesis as it provides the energy needed for the process. Without sufficient light, the rate of photosynthesis decreases.
- **Chlorophyll**: Chlorophyll is the pigment in plants that absorbs light energy. Without chlorophyll, plants cannot capture light energy, making it a crucial component for photosynthesis.
- **Carbon Dioxide**: Carbon dioxide is a raw material for photosynthesis. The concentration of CO2 directly affects the rate of photosynthesis; hence, it is a limiting factor.
- **Oxygen**: Oxygen is produced as a by-product of photosynthesis and is not consumed in the process. Therefore, it does not limit the rate of photosynthesis.

3. **Conclusion**:
- Among the options provided, oxygen is the only one that is not a limiting factor for photosynthesis. It is released during the process rather than being used.

### Final Answer:
**Oxygen is not a limiting factor for photosynthesis.**

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