What can we conclude from the statement that the action and absorption spectrum of photosynthesis overlap? At which wavelength do they show peaks?
In the blue and region there is maximum absorption by the chlorophyll and also shows a higher rate of photosynthesis. Thus we can say that the chief pigment associated
with photosynthesis is chlorophyll a.
The diagram peak is of 400nm wavelength which is equal to blue and peaks again between 600 and 700nm which is of red. Therefore shows that the spectrum of action
and absorption overlaps. The black line shows the photosynthesis action spectrum, while the blue line displays the spectrum of absorption.
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