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To observe the effect of varying salt concentrations outside plant tissue and how water movement by Osmosis is affected.
Member rating: No Rating | Words: | Submitted: Mon Sep 29 2003
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Aim: To observe the effect of varying salt concentrations outside plant tissue and how water movement by Osmosis is affected. Theory: Diffusion occurs from an area of high concentration to an area of low concentration. This results in a homogeneous distribution. This can be related to Osmosis in plants, as water will move from a less concentrated area to a more concentrated area. This occurs through a semi-permeable selective membrane. All plants have a Semi-permeable membrane and it is normally called the cell membrane. This means that the membrane surrounding the plant will let water through either way to balance the ratio of, e.g. salt. But nothing else can pass through the membrane apart from water because other molecules are too large to pass through. This process will continue as long as there is an imbalance in the concentration of the substance, e.g. salt. In plants, the wall of cellulose...
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