A) Violet and orange
B) Blue and red
C) Indigo and yellow
D) Yellow and violet
Correct Answer: B
Solution :
Photosynthesis occurs between wavelengths of about 400 nm and 750 nm. Red & blue colour wavelength is categories in this wavelength. So, plants absorb these colours. Photosynthesis does not occur in the infrared or in ultraviolet light.
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