Question

How do plants absorb different wavelengths of light?

Answer 1

Chlorophyll.

Explanation:

Plants have photosynthetic pigments called chlorophyll found in photosystems in the thylakoid membranes.

There are different chlorophyll such as chlorophyll a ,chlorophyll c etc. which absorb light at different wavelengths.
The shorthand name of the photosystem determines what wavelength the chlorophyll absorb light e.g.

Photosystem 1 is known as P700 since the chlorophyll in there absorb light at a wavelength of 700nm.Same for photosystem 2 known as p680,whose chlorophyll absorb light at a wavelength of 680 nm.
If the chlorophyll absorbed light at a higher wavelength,it would cause bleaching.