A) green light
B) blue followed by red light
C) red followed by blue light
D) blue light
Correct Answer: C
Solution :
Maximum photosynthetic rate has been observed in the full spectrum. Regarding the effect of the different wavelengths, maximum photosynthesis occurs in red light (660 nm) second maximum in blue (440 nm) and minimum in green. The wavelength between 400-700 nm is referred to as Photosynthetically Active Radiation (PAR).
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