Answer:
Absorption Spectrum
This depicts the absorption of light of different wavelength by chlorophyll-a, b,
xanthophyll and carotenoids.
Action
Spectrum This shows the rate of photosynthesis in the plant in the light of
different wavelengths.
Super
Imposed Absorption and Action Spectrum When we superimposed both action and
absorption spectrum, it shows that in the region of red and blue light, the
chlorophyll-a and d harness the
maximum light energy and are the main photosynthetic pigments.
So, the rate
of photosynthesis is high in these two regions. It shows maximum activity peak
at wavelength (red light) i.e., 660-670 nm, 430-470 nm (blue) and 390-430 nm
(violet).
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