During photosynthesis, light saturation is observed at ................ of full sunlight .
(a) `2%`
(b) `5%`
(c) `10%`
(d) `15%`

Options

A. `2%`
B. `5%`
C. `10%`
D. `15%`

Answer

To solve the question regarding the light saturation point during photosynthesis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Photosynthesis**: Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, using carbon dioxide and water. Light intensity is a crucial factor affecting the rate of photosynthesis.

2. **Light Intensity and Photosynthesis**: As light intensity increases, the rate of photosynthesis also increases, up to a certain point. This is because more light energy is available to drive the photosynthetic reactions.

3. **Light Saturation Point**: The light saturation point is the level of light intensity at which the rate of photosynthesis reaches its maximum. Beyond this point, increasing light intensity does not lead to an increase in the rate of photosynthesis.

4. **Identifying the Saturation Percentage**: Research and studies in plant physiology indicate that light saturation during photosynthesis occurs at a relatively low percentage of full sunlight. The commonly accepted value is around 2% of full sunlight.

5. **Choosing the Correct Option**: Based on the understanding that light saturation occurs at 2% of full sunlight, we can conclude that the correct answer to the question is option (a) 2%.

### Final Answer:
The correct answer is (a) 2%.

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