Question

Which colour of light is mostly absorbed by chlorophyll a?

• A. Green
• B. Yellow
• C. Blue
• D. Infra red

Answer 1

The correct option is C Blue

Chlorophyll is the pigment responsible for photosynthesis. The light active in photosynthesis is a small part in the visible spectrum (400- 700 nm). The chlorophyll pigments mainly absorb blue and red light. Maximum absorption is in blue light but maximum photosynthesis occurs in red light.

Chlorophyll a is a specific form of chlorophyll used in oxygenic photosynthesis. It absorbs most energy from wavelengths of violet-blue and orange-red light.