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AtomicJoe
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Seems odd there is a big hole in the spectrum between where they absorb red and blue light?
Please provide a source so that everyone can be on the same page, thanks.AtomicJoe said:Seems odd there is a big hole in the spectrum between where they absorb red and blue light?
Evo said:Please provide a source so that everyone can be on the same page, thanks.
Rules said:Please clearly state what you wish to discuss. In general, one should attempt to flesh out questions and arguments adequately enough that readers will have a good understanding of the issue.
continued...Why is it green?
We see because of light bouncing off things and getting into our eyes, the colour that bounces off is what it looks like. Chlorophyll looks green because it stores the red and blue light and bounces off the green and yellow light which go to our eyes. However this doesn’t make much sense – most of the light from the sun is yellow and green! So plants aren’t even touching most of the light they receive.
Evo said:It's the rule. Please provide a source that explains your OP. Not everyone that reads these threads can read your mind.
For the sake of people that don't know what you are missing that prompted the question (especially when it's something taught in elementary school), you need to show a source so we can figure out where you are confused or not understanding. Anyway, I posted a very simple explanation for you above.AtomicJoe said:It is a question, are questions forbidden?
Will this do?
http://www.ehow.com/facts_7530370_color-light-do-plants-absorb.html
It is difficult to find peer review stuff on such an obvious fact, ie that plants absorb red and blue, but not green light.
It is not the kind of thing which will win you the Nobel prize for biology!
Firstly - it's the forum rules which Joe chooses not to follow.Studiot said:Evo, I think you are being a bit hard on Joe, even if he does put his questions in a rather awkward way.
Assuming the question translated is:
Why do plants reflect the most abundant wavelengths (green/yellow) rather than use them for photosynthesis?
I thought this a very good question was motivated by this question to trawl the net since I don't know the answer either.
Firstly a search of PF itself didn't yield an answer.
Secondly I could cetainly find plenty of people asking this question on the net, but couldn't see one satisfactory answer, although one smart alec offered to email the 'true' answer if you emailed your attempt.
I found plenty of references to other potential chemical systems using other molecules, including one which used hydrogen sulphide not water as the mediator. This system is chemically favourable over chlorophyll/water and fors the basis of the purple planet theory.
Fourthly, I found plenty of references to the 'purple planet theory' that early organisms used anaerobic chemistry to photosythesise.
So I too would be pleased if some knowledgeable member would explain.
I don't think you will find any better answers than the ones Ryan and I furnished.Studiot said:With the greatest respect none of the posts here, or the links they contain, answer the question I posed.
Studiot said:With the greatest respect none of the posts here, or the links they contain, answer the question I posed.
Joe, since you are online perhaps you would confirm whether my translation is right or correct it if not?
I don't think you will find any better answers than the ones Ryan and I furnished.
I have no problem with the question, it was how it was posted, it could have been posed much better in order to be clear to anyone that happened upon the post.Studiot said:So I think it is a pretty fundamental question to ask why this was, even if we cannot at this moment provide and answer.
I am not sure what you mean by 'my translation'
ryan_m_b said:Plants don't absorb green because the molecule they use to absorb EM radiation is chlorophyll, which is itself green. Potentially another molecule could be used but this is how life evolved and having a different pigment molecule may be hard to evolve because of the necessary huge morphological difference i.e. thermoregulation.
Antiphon said:
Studiot said:English is very definitely my native tongue.
As such I can tell you that your first post was not actually a question, even though it ended with a question mark.
So Evo was right to seek clarification.
I also think your response was an over-reaction.
Having seen several of your other threads develop like this I tried to introduce a bit of softening to re-establish focus for the benfit of all.
Why don't plants absorb green light?
Seems odd there is a big hole in the spectrum between where they absorb red and blue light?
Why plants use chlorophyl is explained in my first link.AtomicJoe said:That's not a complete answer you have to explain why plants use chlorophyll also.
Plants contain a pigment called chlorophyll, which absorbs red and blue light for photosynthesis. The green light is reflected, giving the leaves their green color.
While green light is not directly used in photosynthesis, it does play a role in regulating the growth and development of plants. Green light can affect leaf expansion, flowering, and seed germination.
Red and blue light are the most effective for photosynthesis, but plants also need a small amount of green light for optimal growth. A combination of red, blue, and green light is the best for overall plant growth.
While plants do not rely on green light for photosynthesis, they do have some ability to absorb and utilize green light. Studies have shown that some plants can use green light for photosynthesis, but it is not their primary source of energy.
The color of light can affect various aspects of plant growth, including leaf size, stem length, and flowering. Different colors of light can also trigger different responses in plants, such as increasing flower production or altering the production of certain plant hormones.