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An Investigation of the Water Potential in a Root Vegetable.
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An Investigation of the Water Potential in a Root Vegetable By Richard Godwin-Baker To Determine the Water Potential of a Root Vegetable Introduction Water potential is represented by the Greek letter Psi (?) and is measured in Megapascals (MPa). Water potential is the measurement of the ability of water molecules to diffuse from a region of high water potential to a region of low water potential down a concentration gradient. The water molecules move through a semi-permeable membrane and can move in either direction and do so according to the ? on each side. For example if a cell with a high water potential was placed in a solution with a low water potential the water molecules would leave the cell via the membrane, and would continue to do so until the solution has the same ? as the cell, this is termed equilibrium. If a cell with a low water potential was placed in...
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