Q. What are the colors (of the electromagnetic spectrum) absorbed by plants? What would happen to photosynthesis if the green light waves that reach a vegetable were blocked?
Chlorophyll absorbs all other colors of the electromagnetic spectrum except it is practically does not absorb the green, the green color is reflected as well as such reflection provides the characteristic color of plants. If the green light that reaches a plant is exposure and blocked of the plant to other colors is maintained there would be no harm to the photosynthesis process. Apparent paradox: the green light is not vital for photosynthesis.
There is a difference between the optimum color frequency for the two major kinds of chlorophyll, the chlorophyll A and the chlorophyll B. Chlorophyll A has an absorption peak at approximately 420 nm wavelength (anil) and chlorophyll B has its major absorption in 450 nm wavelength (blue).