Rate of photosynthesis is independent of

Options

A. Duration of light
B. Intensity of light
C. Temperature
D. Respiration

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which factor the rate of photosynthesis is independent of. This means we need to identify a variable that does not affect the rate at which photosynthesis occurs in plants.

2. **Analyzing the Options**:
- **Option A: Duration of Light**: This refers to the length of time that light is available for photosynthesis. While it can influence other processes like flowering, photosynthesis itself can occur as long as there is some light, regardless of the duration.
- **Option B: Intensity of Light**: The intensity of light directly affects the rate of photosynthesis. Higher light intensity generally increases the rate of photosynthesis up to a certain point, so this option is not correct.
- **Option C: Temperature**: Temperature affects the enzymatic reactions involved in photosynthesis. Higher or lower temperatures can limit the rate of photosynthesis, making this option incorrect as well.
- **Option D: Respiration**: Respiration is a process that occurs in plants and animals, but it does not directly affect the rate of photosynthesis. However, it is not independent of photosynthesis since both processes are interconnected in plant metabolism.

3. **Conclusion**: After analyzing all the options, the correct answer is **Option A: Duration of Light**. The rate of photosynthesis is independent of the duration of light.

**Final Answer**: The rate of photosynthesis is independent of the duration of light.

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