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How water enters and one what it does once it has entered a plant
Member rating: No Rating | Words: | Submitted: Wed Jan 04 2006
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Water and its route into and through plants At least 20 points * Water enters through the root hair cells and then moves across into the xylem tissue in the centre of the root. * Water moves in this direction because the soil water has higher water potential, than the solution inside the root hair cells. * This is because the cell sap has organic and inorganic molecules dissolved in it. * The root hairs provide a large surface area over which water can be absorbed. * Minerals are also absorbed but, as you should be able to work out, their absorption requires energy in the form of ATP because they are absorbed by active transport. * They have to be pumped against the concentration gradient. * Water taken up by the root hairs moves across the cortex of the root either via the cytoplasm of the cells in between the root hair...
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