There are certain factors that affect the rate of photosynthesis in plants. Such factors does not include

Options

A. quality of light
B. Intensity of light
C. `CO_(2)`
D. atmospheric humidity

Answer

To answer the question about which factor does not affect the rate of photosynthesis in plants, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Photosynthesis**:
- Photosynthesis is the process by which plants convert light energy into chemical energy, using sunlight, chlorophyll, and carbon dioxide to produce glucose and oxygen.

2. **Identifying Factors Affecting Photosynthesis**:
- Factors affecting the rate of photosynthesis can be categorized into two groups: internal factors (plant factors) and external factors (environmental factors).

3. **Internal Factors**:
- These include characteristics of the plant itself, such as:
- Age of the plant
- Size and orientation of leaves
- Amount of chlorophyll
- Presence of chloroplasts
- Structure of mesophyll cells

4. **External Factors**:
- These factors control the environment in which the plant grows, including:
- Light intensity
- Light quality (wavelengths of light)
- Duration of light exposure
- Carbon dioxide concentration
- Temperature
- Water availability

5. **Analyzing the Given Options**:
- The question asks which factor does not affect the rate of photosynthesis. The options provided include:
- Quality of light
- Intensity of light
- Carbon dioxide
- Atmospheric humidity

6. **Determining the Correct Answer**:
- Quality of light, intensity of light, and carbon dioxide concentration are all factors that influence the rate of photosynthesis.
- Atmospheric humidity, however, does not directly affect the rate of photosynthesis. While water is essential, humidity itself is not a determining factor for photosynthesis.

7. **Conclusion**:
- Therefore, the factor that does not affect the rate of photosynthesis is **atmospheric humidity**.

### Final Answer:
The factor that does not affect the rate of photosynthesis in plants is **atmospheric humidity**.

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