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Toby Nicholson An Experiment to Determine the Water Potential of a Plant Tissue Interpretation of results The graph shows that as the molarity of the sucrose solution increases the average percentage change in length decreases. In 0.0M solution the beetroot increases in length by an average of 5.3%, in 1.5M solution the average change in length is -10.9%; the beetroot has decreased in length. This trend can be explained by the idea of osmosis. Osmosis is the net movement of molecules from a region of higher water potential to a region of lower water potential, down a potential gradient, through a partially permeable membrane. When a beetroot strip in placed in a solution of low sucrose concentration (hypotonic), a solution with high water potential, the net movement of water molecules will be from the sucrose solution and into the cells of the beetroot through the partially permeable cell membranes via...

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