Where do green plants get their energy?
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the roots absorbed minerals in the soil and the trunk/branches transport the nutrients to the leaves which manufature the plant food through a proccess called photosynthesis by the action of the chlorophyl which is the green color of the leaves, and the sun's ray
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In photosynthesis, plants convert light into chemical energy. This energy is thus used to turn carbon dioxide into carbohydrate releasing oxygen as a byproduct. That is why many plans to fix global warming such as the Kyoto Protocol aim to increase the number of forested areas through so-called carbon sinks.
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Homeostasis.\n\nFor more specifics about plants look at the bottom of the second source.
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Photosynthesis in plants occurs in the leaves and in green stems within the specialized cell structures called chloroplasts. . . For more details please consult Encarta Encyclopedia--photosynthesis of the leaf--good luck.
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Because sun is needed for plants to go through photosynthesis, (this is what makes it turn green and grow). and so humans can eat it.. giving them the energy
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Trees are phototrophs, they produce their own food by using carbon dioxide, water, and sunlight.
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In Photosynthesis, plants use the sun's energy as light to transform carbon dioxide and water into glucose.  In cellular respiration,  glucose is ultimately broken down to yield carbon dioxide and water, and the energy from this process is stored as ATP molecules.
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microchondria convert food to energy\nI think chloroplasts use the sun to create food which can be converted to energy. You can look it up on google.com.
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Plants can sustain photosynthesis (and release oxygen) from any lightsource that has enough energy. But plants can also get stressed by too much light and actually get sick. They might also grow in unnatural ways, like growing sprouts all over, if "fed" the wrong amount of light for too long periods of time. \n\nPlants are tuned to natural light during ordinary hours but some plants can even "OD" on sunlight. When the sun shines too hot during a hot day they sometimes shutdown photosynthesis and begin to perspire. \n\nIt all comes down to what kind of plant it is. An ordinary house plant should release oxygen if the artificial light is not too intensive.
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Pardon me if I am incorrect but i dont think that plants NEED more energy rather they HAVE more energy. Each time you move up the food chain, only 10% (?) of the original energy the organism had is retained. The rest is lost. Since plants are at the bottom of the food chaing and are autotrophs, they receive 100% of the energy they converted through photosynthesis. Then the rabbit who eats the plant gets only 10% of that and the fox who eats the rabbit gets only 1%.
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yes, any light can.  photosynthesis just requires photons of light at certain wavelengths, and any white light whether 'natural' or 'artificial' contains all wavelengths of light, and so photons of the proper wavelength will reach the plant and allow photosynthesis to occur.  there is nothing special about the photons from sunlight.  if i remember correctly, the wavelength plants need is 680nm for photosystem I and 700nm for photosystemII(or maybe i have that backwards) in the light cycle of photosynthesis... well anyway, you should be fine with any kind of light as long as it's not purely green light(because chlorophyll can not absorb green light, it reflects green light which is why it is green and leaves without pigmentation are green.)
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Predominantly red and blue - there are peaks at these ends on the absorption spectrum:(http://www.mbari.org/staff/ryjo/cosmos/Cabs.html)\nBasically, they DON'T use much green - it is reflected back, so is what is seen by your eyes - hence green plants appear green!\nThe main pigments in green plants are chlorophyll-a and chlorophyll-b (which absorb light at those particular wavelengths/colours shown in the diagram) but there are also other pigments used in plants and algae.\n\n-Tara mentioned photosystems - yup, there are 2 photosystems used in the light reactions of photosynthesis - the light energy is absorbed by the pigments in the 'antenna complex' of PSII, which then transfer this energy toward the centre Chl-a molecule ("reaction centre chlorophyll") of that photosystem, exciting an electron which is passed down an 'electron transport chain' to PSI, etc... (if you don't need to know it yet, it's sounds like a scary long process!) - but although I believe the reaction centre chlorophylls may absorb light best only at the red end, there are other pigments in the photosystems which would be absorbing at the blue end as well I should think - blue light is higher energy (shorter wavelength) than red light, so this higher energy light would be absorbed by pigments nearer the edges of the antenna complex, and as the light is transferred through to the reaction centre chlorophyll it would lose energy in the process, and thus probably more toward the red end of the spectrum by the time it arrives. http://en.wikipedia.org/wiki/Photosystem
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Plant cells contain chlorophyll. There are a few types of chlorophyll. Some are high energy and others lower energy.  Every species of plant has different ratios of these various chlorophyll molecules.\n\nAs light energy hits a plant leaf, you get conversion of energy. If more light hits the plant, then more energy up to a point. You will reach a couple of roadblocks. The first is the theoretical maximum the chlorophyll can produce. You have saturated it and it can do no more. I say theoretical as this level will often burn the plant before it is reached. The other roadblock is that as you increase the energy you may move or shif out of the optimal range for that species. So they may have lot of chlorophyll A and little Chlorphyll C and if you shifted to the energy wavelength of C total energy production would decrease even though you increased available source energy.\n\nSince this sounds like a school project, I will only point you in the proper directon.  Look up different types of chlorophyll. Look up the types found in tomato plants. Both are easily searched on Yahoo or Google. Then look up evergy levels of saturation on those types and then look up ebergy levels of light intensity. You could then make a simple chart showing at what level the prduction will shift and then decrease.
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plants require visible spectrum for photosynthesis. the light you can see is the light they can use. green is least effective. red and blue are most.
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The sun is the earth's largest source of reliable energy.  Plants have green leaves that absorb and trap sunlight and convert that light into chemical energy; namely starches that other animals eat.\n\nThe sunlight is converted to starches by chlorophyll, a green substance in the leaves of green plants.  Carbon dioxide gas molecules (CO2) in our atmosphere is combined into sugar; sugar is combined into starches.  Wood is a form of starch called cellulose.\n\nSecondly, water is "split" (chopped into three pieces) releasing oxygen (gas) by photosynthesis.  So plants provide us oxygen by "splitting" water; and plants provide us sugar by "fixing" carbon dioxide.  We eat the plants or we animals that eat the plants.  This is how we get our energy.\n\nSo, cows are animals that eat grass; in so doing they gather sugar energy and live.  We eat cows, for example.  Or, certain insects eat plants; some fish eat those insects and then we eat the fish...so on and so forth.
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Via the carbon cycle. Green plants take in carbon dioxide from air during photosynthesis to produce a 6C sugar. Herbivores eat these green plants and carnivores eat herbivores. All animals respire and give back carbon into the air via carbon dioxide. And when all animals die, putrefying agents aid in the decomposition of dead matter and carbon compounds are taken back into the soil or given out into the air as carbon dioxide.
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By using a spectrophotometer, scientists found that a green leaf absorbes mostly the blue and red portions of the spectrum, and reflects or rejects the green wavelengths. Therefore, green light is the worst, or most useless light, to give a green plant.\nThese reflected green wavelengths strike your eyes, and you see green.