Minimum photosythesis takes place in

Options

A. Green light
B. red light
C. Blue light
D. White light

Answer

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is the process by which plants convert light energy into chemical energy, producing their own food (glucose) using carbon dioxide and water, with the help of sunlight.

2. **Role of Chlorophyll**: Chlorophyll is the green pigment found in plants that plays a crucial role in photosynthesis. It absorbs light energy, primarily from the blue and red wavelengths of light, while reflecting green light.

3. **Light Absorption**: Different wavelengths of light are absorbed differently by chlorophyll:
- **Red Light**: Absorbed effectively and promotes high rates of photosynthesis.
- **Blue Light**: Also absorbed effectively and supports photosynthesis.
- **Green Light**: Mostly reflected by the chlorophyll, which is why plants appear green. This means that green light is not absorbed well and thus contributes minimally to photosynthesis.

4. **Comparing Light Types**: Among the options given (green light, red light, blue light, and white light):
- Red and blue light are absorbed well and facilitate maximum photosynthesis.
- White light contains all colors but is not a specific wavelength; it can still promote photosynthesis but is not as effective as red and blue light.
- Green light, being reflected, does not contribute significantly to photosynthesis.

5. **Conclusion**: Since green light is reflected and does not contribute effectively to the process of photosynthesis, it is the light under which minimum photosynthesis occurs.

**Final Answer**: Minimum photosynthesis takes place in **green light**.

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