What plant or plants use the most CO2 and produce the most Oxygen?
342764
a tree called Pawlonia is the one that is recomended and the World bank pays subsidies to farmers who reforrest with these trees, under their program for capturing carbon and the production of oxigen.\na good general rule for plants is to look for plants with big leaves,and this varies with climatic conditions
1005078
oxygen, because they need it for cellular respiration, just like we do.  In order to use CO2, sunlight has to be present.  Therefore, they don't use CO2 at night.
218542
You have to remember plants did not cause the atmosphere to become oxygenic in the primordial days, cyanobacteria did. I'm guessing there are probably trillions of trees in the world.
872446
Hi there,\nNo plant or for that matter, no organism on earth can work like that 24hrs to produce oxygen. Actually no plant has any "commitment" to produce oxygen at all. Oxygen is actually a byproduct of the mechanism called photosynthesis. Photosynthesis is how plants and other organisms that have the green pigment Chlorophyll, produce their food. Oxygen is relesed as a byproduct in this process consisting of a series of reactions. All plants work like this during to produce food (carbohydrates, proteins, etc) during day time just because they can utilise the sun's light energy as much as possible. But once night falls, these plants stop this process of "food making" and go to "sleep". During thiese hours of night, they respire just like  any other animal. They take in Oxygen and give out CO2. The Peepal tree is no exception. And if they do try working 24x7 as INdian MYths say, they will soon be exhausted, because the energy required for photosynthetic processes is supplied by the process of "respiration". \nPeepal got its false fame in Hindu literature just because it is considered a holy tree- a tree of enlightenment since ancient times.
223511
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.
543438
You should do an experiment, that's what i did.\n \nPhotosynthesis is the production of food compounds from carbon dioxide and water by green plants using energy from sunlight, absorbed by chlorophyll ie. photosynthesis is how plants feed.\n\nlightlightlil\n\n6CO2 + 6H2O                 à C6H12O6 + 6O2\n\n        Raw materials   Products\n\nie.         Green plants make organic substances from inorganic substances.\n\nIn order to keep the equation for photosynthesis simple, glucose is shown as the only food compound produced. However, this does not mean that glucose is not the only food compound produced.\n\nThe process of taking in and giving out gases is known as gaseous exchange. When green plants photosynthesise, they take in CO2 and give out O2. This only happens in daylight when light is available as an energy supply. The exchange of gases in green plants in light is the opposite of that of animals; however this does not mean that green plants do not respire. During daylight, plants photosynthesise and respire at the same time, hence all CO2 produced by the plant during respiration is transformed into O2 and food (and thus energy) for the plant. It is only when the rate of photosynthesis is greater than the rate of respiration that CO2 will be taken in and excess O2 given out.\n\nie.         In darkness O2 is taken in and CO2 is given out - there is no p/s; in dim light the rate of respiration and p/s    is equal - there is no gaseous exchange with the air; in bright light however p/s is faster than respiration          and thus O2 is given out - CO2 is taken in to use for p/s and the CO2 made from the plant’s respiration is   also used to make O2.\n\nie.         The more light (the higher the light intensity), the greater the rate of p/s - unto the LSP [see below].\n\nIf a plant is given plenty of sunlight, carbon dioxide and water, the limit on the rate of p/s is the ability of the plant to absorb these materials and make them react. (eg. total number and capacity of chloroplasts and the physical limitation of carbon dioxide diffusion.) Most of the time plants DO NOT have an unlimited supply and so the rate of p/s is not as high as it might be.\n\nBlackman’s Law states that:\n\n            “The factor in least supply will be the limiting factor.”\n\n\n\nAs the light intensity (LI) increases, the rate of p/s increases, until the plant is photosynthesising as fast as it can - the LSP - Light Saturation Point. When the LSP is reached, plants cannot photosynthesise any faster, even when the light gets brighter. From this point on, according to Blackman’s Law, the factor in least supply will be the limiting factor ie. either CO2, H2O or temperature will be the limiting factor.\n\n\n\nAs the amount of CO2 available increases, the rate of p/s increases, until the plant is photosynthesising as fast as it can - the CSP - CO2 Saturation Point. If both CO2 and light supply are increased together, the rate of p/s will level out. Henceforth it is limited, according to Blackman’s Law, by the factor in least supply, either H2O or temperature. however there is a physical limitation of the carbon dioxide diffusion and the plant’s sunlight absorption.\n\n\n\nAt a lower temperature, the rate of p/s is increasing with increasing LI or CO2 availability, but the LSP or CSP is quickly reached. At a higher temperature, the rate of p/s increased further and reaches the LSP / CSP slower. Thus we can se that temperature affects the rate of p/s - it is higher at higher temperatures.\n\nFrom this information, one can see that if one wants to investigate solely the effect of the quantity of light on Elodea, one must keep both the amount of CO2 and the temperature constant.\n\nLight intensity will decrease as the distance between the light source and the object increases, and vice versa.\n\nThus the relationship between LI and distance can be described as\n\n         1 This value will be very small; multiplying the LI 1000\n\nLI =
146756
I think when plant absorb water, or H2O, they use the H, or the hydrogen, and aspirate (or "exhale" in animal terms) the oxygen they take in as a liquid as a gas. The aspiration I believe is very slow and could take 100 plants 100 years, longer than the average lifespan of a human being, to see significant increases in oxygen levels.
97853
rice,wheat,potato,etc...r some of the C-3 plants.....when they r exposed to co2(14),they produce 3C compound called phosphoglyceric acid.....this occurs only in mesophyll cells at an optimum temp of 20-25 degree C. Here photorespiration rate is high & leads to loss of fixed CO2. It also decreases CO2 fixation rate....
741887
The biggest one with the most leaves.  I know that sounds simple, but think about it...the bigger you are, the more you need and the more you can produce.
533016
plants use the sunlight to turn nutrients into sugars to feed the plant they also take the toxins away from the plant when they go brown and drop off. Carbon dioxide and oxygen are released from them.
606416
Oxygen is the byproduct of photosynthesis, which means that trees create oxygen by processing sunlight, water, and carbon dioxide into the simple carbohydrates they need as "food."
1116831
Diffusion of carbon dioxide and oxygen take place in the alveolar of the lungs.  Since there is a higher concentration of oxygen in the alveolar sac as compared to the capillaries surrounding it, the oxygen goes from the higher concentration to that of the lower concentration.  The carbon dioxide is more concentrated in the capillary blood than the alveoli. so it diffuses into the lungs.  \n\nIn photoynthesis water must diffuse into the plant or bacterial cell.  It is then destroyed in what is commonly called the light reactions.  It is separated into Hydrogen ions and oxygen.  The oxygen is released into the air via diffusion and the Hydrogen ions are used to produce ATP.  Since the water is used up more is needed to keep the process up. So more water diffuses into the cell.  In order for tthe palnt to make food from the carbon dioxide that has diffused into the cell as well. It must enter the chloroplast.  Here the Dark reactions of the process occur.  The carbon dioxide is used up along with some of the ATP to make sugar.  SO as the sugar is made and relocated this creates a carbon dioxide deficit in the chloroplast.  So more Carbon dioxide diffuses into it.  This continues until the process stops or the plant dies.
996758
Most likely through photosynthesis. Billions of plants can't be wrong.
319159
C and O2 is turned into CO2 by breathing\nCO2 is made into C (food) and O2 (byproduct) by photosynthesis in plants.
532334
You need to understand that plant ONLY produce oxygen when they are growing. If a plant isn't physically gaining weight then it isn't producing any oxygen at all, or to be more accurate it is burning just as much oxygen as it is producing.\n\nAs such it doesn't matter whether grass is long or short, it only matter whether it is gaining weight. It is possible to have long grass that is senescent or short grass that is growing rapidly, or vice versa. There is simply no correlation between grass length and oxygen production.\n\nAs for using plants to sequester carbon, basically you can forget about normal grasses. Cane grasses such as sugar cane and bamboo maybe, but not normal grasses. The problem is that once a plant or a part of a plant dies and starts to decay it promptly releases all the carbon it locked up while alive. That is why only growing plants produce oxygen.\n\nGrasses generally have too short a lifespan to have any measurable impact on carbon sequestration. The entire carbon cycle takes place on an annual scale whereas to have any meaningful effect the carbon need to be sequestered for centuries.
421068
Well if I remember this right...NASA was doing experiments a few years ago with rhubarb and pumpkin plants. The C02 oxygen exchange was the greatest. Also there was something about a genetically engineered algae they were trying out
556905
Well, technically plants spend carbon dioxide and produce oxygen.I think... I would think that since most plants continue to grow until they die, that the bigger they get, the more carbon dioxide they use, and the more oxygen they produce.