Which color of the light is mostly absorbed by chlorophyll-a ?

Options

A. Green
B. Red
C. Blue
D. Infra red

Answer

**Step-by-Step Solution:**

1. **Understanding Chlorophyll-a**: Chlorophyll-a is a key pigment involved in photosynthesis in higher plants. It plays a crucial role in capturing light energy.

2. **Identifying Light Colors**: The visible light spectrum includes various colors, primarily red, blue, green, and infrared. Each color has different wavelengths.

3. **Absorption Characteristics**: Chlorophyll-a absorbs light most effectively in certain wavelengths. It is known to absorb mainly blue and red light.

4. **Maximum Absorption**: Among the colors absorbed, chlorophyll-a shows maximum absorption in the blue light spectrum. This means that blue light is absorbed more efficiently than other colors.

5. **Photosynthesis Efficiency**: While chlorophyll-a absorbs blue light most effectively, it is important to note that maximum photosynthesis occurs in red light. However, the question specifically asks about absorption.

6. **Conclusion**: Based on the information, the color of light that is mostly absorbed by chlorophyll-a is blue.

**Final Answer**: Blue

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