If a cell shrinks when placed in a solution, this solution is
A
Hypotonic
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B
Hypertonic
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C
Isotonic
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D
Pure solvent
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Solution
The correct option is B Hypertonic Water flows along its own concentration gradient. When a cell is placed in a hypotonic medium it swells due to absorption of water by the process of endosmosis. The endosmotic gain of water makes a cell turgid. When a cell is placed in a hypertonic medium, it loses water due to the process of exosmosis. Exosmotic loss of water results in plasmolysis. Thus, the correct answer is option B.