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Question

why do chlorophylls absorb mostly red and blue regions of the spectrum and why photosynthesis does not occur in green light?

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Solution

Chlorophyll can only absorb certain wavelength of visible light spectrum. It absorbs only red and blue regions of the spectrum. Chlorophyll gets destroyed very easily by excess energy. For this reason they only absorb some amount of wavelengths specifically red and blue.

Chlorophyll cannot absorb green light. They normally reflect back the green light from the light spectrum. For this reason we can see the plant parts containing chlorophyll green. As they cannot absorb energy from green light they cannot perform photosynthesis also in green light.


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