Which of the following statements related to green light is correct ?

Options

A. The atmosphere filters out all the colours of the visible light spectrum except green .
B. The green light is the most effective wavelength region of the visible spectrum in sunlight for photosynthesis
C. Chorophyll is least effective in absorbing green light
D. The green light allows maximum photosynthesis

Answer

To solve the question "Which of the following statements related to green light is correct?", we will evaluate each of the provided options based on our understanding of green light and its role in photosynthesis.

### Step-by-Step Solution:

1. **Understanding Green Light**:
- Green light is part of the visible light spectrum with a wavelength of approximately 550 nm. It is important to note that while it is a visible light, its role in photosynthesis is limited compared to other wavelengths.

2. **Evaluating Option A**:
- **Statement**: "The atmosphere filters out all the colors of the visible light spectrum except green."
- **Analysis**: This statement is incorrect. The atmosphere does not selectively filter out colors; it scatters and absorbs various wavelengths of light. Thus, this option is false.

3. **Evaluating Option B**:
- **Statement**: "Green light is the most effective wavelength region of the visible spectrum in sunlight for photosynthesis."
- **Analysis**: This statement is also incorrect. Green light is not the most effective for photosynthesis; in fact, it is one of the least effective wavelengths. Plants primarily utilize red and blue light for photosynthesis. Therefore, this option is false.

4. **Evaluating Option C**:
- **Statement**: "Chlorophyll is least effective in absorbing green light."
- **Analysis**: This statement is correct. Chlorophyll absorbs light most effectively in the blue (around 430 nm) and red (around 660 nm) regions of the spectrum, while it is least effective in absorbing green light, which is reflected, giving plants their green color. Thus, this option is true.

5. **Evaluating Option D**:
- **Statement**: "Green light allows maximum photosynthesis."
- **Analysis**: This statement is incorrect. As previously mentioned, red and blue light are the most effective for photosynthesis, not green light. Therefore, this option is false.

### Conclusion:
The correct answer is **Option C**: "Chlorophyll is least effective in absorbing green light."