the cell sap of a plant is said to be in a higher concentration , if is it so ? Then how does osmosis occurs from a higher concentration to lower concentration???
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The cells of the roots contain cell sap (solution) at a higher concentration than that of surrounding soil water. As a result, the water is absorbed by the root hairs. This is because the water always travels from a region of high water potential to the region of lower water potential. Here, the soil possesses a higher water potential as compared to the root hair.
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