Which factor is not limiting in normal conditions for photosynthesis

Options

A. (a) Chlorophyll
B. (b) Light
C. (c) Water
D. (d) `CO_(2)`

Answer

To determine which factor is not limiting in normal conditions for photosynthesis, we need to analyze each option provided:

1. **Understanding Photosynthesis**: Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, using chlorophyll to capture light energy.

2. **Identifying the Factors**:
- **Chlorophyll**: This is the pigment found in the chloroplasts of plant cells that absorbs light energy. Plants typically have an abundant supply of chlorophyll.
- **Light**: Light is essential for photosynthesis. However, it can be limiting if there is insufficient light.
- **Water**: Water is also crucial for photosynthesis. In conditions of drought or limited water supply, it can become a limiting factor.
- **Carbon Dioxide**: Carbon dioxide is a raw material for photosynthesis. In low concentrations, it can limit the rate of photosynthesis.

3. **Evaluating the Options**:
- **Option A (Chlorophyll)**: As mentioned, chlorophyll is abundant in plants and does not limit photosynthesis under normal conditions.
- **Option B (Light)**: Light can be limiting if it is not available in sufficient quantities.
- **Option C (Water)**: Water can become a limiting factor, especially in dry conditions.
- **Option D (Carbon Dioxide)**: Carbon dioxide can also be limiting if its concentration is low.

4. **Conclusion**: Based on this analysis, the factor that is not limiting in normal conditions for photosynthesis is **Option A: Chlorophyll**.

### Final Answer:
**Option A: Chlorophyll is not a limiting factor in normal conditions for photosynthesis.**

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