ONION PEEL CELL IS KEPT IN A HIGHLY CONCENTRATED SOLUTION
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When placed in a highly concentrated solution, the onion peel cell will become flaccid. It means that since the concentration of solute is high in the solution (and hence water potential is low), movement of water takes place from the cell to the solution (through osmosis). As a result, the cytoplasm which was exerting pressure against the cell wall, begins to shrink (also known as plasmolysis). Therefore, as water leaves the cell, the cell begins to lose its turgidity and becomes flaccid.
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When onion peel cell is placed in a highly concentrated solution[hyper tonic solution-- a solution having more solute concentration than the cell cytoplasm]
In this case too, water crosses the plasma membrane in both directions, but in this example , more water leaves the cell than it enters.
This results in movement of water from cell towards the solution.The cytoplasm of the cell shrinks and cell is said to be plasmolysed. and cell will become flaccid.
In this case too, water crosses the plasma membrane in both directions, but in this example , more water leaves the cell than it enters.
This results in movement of water from cell towards the solution.The cytoplasm of the cell shrinks and cell is said to be plasmolysed. and cell will become flaccid.
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