Water is transpired through stomata, but carbon dioxide also must pass through stomata into a leaf for photosynthesis to occur. There is evidence that the level of carbon dioxide in the atmosphere has not always been the same over the history of life on Earth. Explain how the presence of a higher or lower concentration of atmospheric carbon dioxide would impact the evolution of stomata density in plants.
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Stomata are small openings on the surfaces of leaves and stems that allow for gas exchange. They enable the uptake of carbon dioxide (CO2) necessary for photosynthesis and the release of oxygen. They also allow for the loss of water vapor from the plant to the Show more…
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