In normal plants light saturation occurs at

Options

A. 10% of full sunlight
B. 50% of full sunlight
C. double to full sunlight
D. four time to full sunlight

Answer

To solve the question "In normal plants light saturation occurs at," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Light Saturation**:
- Light saturation refers to the point at which an increase in light intensity does not lead to an increase in the rate of photosynthesis. Beyond this point, even if light intensity increases, the rate of photosynthesis remains constant.

2. **Identify the Options Given**:
- The options provided are:
- A) 10 percent of full sunlight
- B) 50 percent of full sunlight
- C) Double the full sunlight
- D) 4 times the full sunlight

3. **Recall the Characteristics of Photosynthesis**:
- Generally, as light intensity increases, the rate of photosynthesis also increases until it reaches a saturation point. After this point, additional light does not enhance photosynthesis.

4. **Determine the Saturation Point for Normal Plants**:
- For normal plants, research and studies indicate that light saturation typically occurs at around 10 percent of full sunlight. This means that at this level of light intensity, the photosynthesis rate plateaus.

5. **Select the Correct Option**:
- Based on the understanding that normal plants reach light saturation at 10 percent of full sunlight, the correct answer is **Option A**.

### Final Answer:
- In normal plants, light saturation occurs at **10 percent of full sunlight** (Option A).

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