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quote:Originally posted by chrisThanks Eth.I'm not sure I agree with your point about water. Red is strongly absorbed / scattered by water, blues and greens much less-so. That's why blood from cuts (or even shark attacks) looks a bizarre dark colour underwater. So ideally, by your argument, aquatic plants should absorb green and reject red wavelengths.Chris"I never forget a face, but in your case I'll make an exception" - Groucho Marx
quote:Originally posted by daveshortsSeaweed of course uses a different reddey version of chlorphyl, which must mean that it absorbs the blues and greens which travel through water the best, which makes sense. All the green sea plants are based quite shallow, so I suppose that green chlorophyl must have some advantage if you get the whole spectrum, but I don't know what.
quote:Originally posted by chrisI have just received an email from Dirk at Stanford in the US.His question really intrigued me because I can't answer it. Maybe someone here can help me?Here it is:"I have a simple question that's been bothering me for a while. Why are most plants green? Sure, it's because chlophyll rejects green, but why does it? The green part of the solar spectrum is the most intense. It seems like a waste to reject it."Chris