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Home Q & A Board Biology-Related Homework Help General Biology
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dudeclape101 dudeclape101
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9 years ago
I get why plants use violet and some blue light; it has a small wavelength and thus higher energy. What I don't get is why they use red light, since it has a longer wavelength than green does.
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Educator
9 years ago
I thought chlorophyll absorbs all wavelengths but the wavelength associated with green?
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habibahabiba
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9 years ago
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dudeclape101 Author
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#3
9 years ago
Quote from: habiba (9 years ago)
It seems strange that plants would harvest the lower energy red light instead of the higher energy green light, unless you consider that, like all life, plants first evolved in the ocean. Sea water quickly absorbs the high-energy blue and green light, so that only the lower energy, longer wavelength red light can penetrate into the ocean.
Wow, I guess it's true that nothing in Biology makes sense unless you look at it from an evolutionary perspective.
Thanks for that.
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