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What can we conclude from the statement that the action and absorption spectrum of photosynthesis overlap? At which wavelength do they show peaks?

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In order to justify the above statement, it is vital to analyse the below graphs.

The first graph indicates the rate of photosynthesis measured with the help ofoxygen released in the process. The second graph indicates the absorption values of various wavelengths of light by the chlorophyll pigment a. Both the graphs have a peaking value at more than 400 nm of a wavelength which becomes equivalent to the wavelength of blue colour. Post that range; the graphs indicate a trough. Later, the values increase again and lie between the range of 600 and 700 nm of wavelength. This value is equivalent to the wavelength of red colour. This indicates the action and absorption spectrums overlap with each other. The black line indicates the action process of photosynthesis. The blue line indicates the absorption process with 430 -470 nm and 660 -670 nm wavelength values.

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