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Biology Coursework An Investigation to Determine the Water Potential of the Cells in A Potato Tuber Aim - The aim is to investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato chip of a given size. Plant cells always have a strong cell wall surrounding them. When they take up water through the roots by osmosis they start to swell, but the cell wall prevents them from bursting. The roots of the plant are specially adapted root hair cells. They have large surface areas and thin cell walls to aid absorption by osmosis. The evaporation of water through stomata on plant leaves causes a transpiration stream. Therefore the water is taken up through the xylem vessels. Plant cells become "turgid" when they are put in dilute solutions. Turgid means swollen and hard. The pressure inside the cell rises and...

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