Q. What percentage of usable radient energy entering a reaction site of photosynthesis is converted to potential energy

Options

A. a) `10 %`
B. b) `35 %`
C. c) `20 %`
D. d) `42 %`

Answer

To solve the question regarding the percentage of usable radiant energy converted to potential energy during photosynthesis, 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, primarily in the form of glucose (C6H12O6). This process occurs in the chloroplasts of plant cells, where chlorophyll absorbs light.

2. **Identifying the Energy Conversion**:
- During photosynthesis, plants absorb light energy from the sun. The absorbed light energy is then converted into chemical energy (potential energy) stored in the bonds of glucose.

3. **Determining the Usable Light Spectrum**:
- Not all light from the sun is used in photosynthesis. Plants primarily utilize blue and red light wavelengths. Green light is mostly reflected and not absorbed by plants.

4. **Calculating the Percentage of Energy Conversion**:
- Research indicates that approximately 35% of the usable radiant energy that plants absorb is converted into chemical energy during photosynthesis. This means that out of all the light energy that can be used, about 35% is transformed into potential energy.

5. **Selecting the Correct Answer**:
- Based on the information gathered, the correct answer to the question is **35%**.

### Final Answer:
The percentage of usable radiant energy entering a reaction site of photosynthesis that is converted to potential energy is **35%**.

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