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प्रश्न
Two potato cubes each 1 cm3 in size, were placed separately in two containers (A and B), the container A having water and the other (B) containing concentrated sugar solution. After 24 hours when the cubes were examined, those placed in water were found to be firm and had increased slightly in size and those placed in concentrated sugar solution were found to be soft and somewhat decreased in size. Use the above information to answer the questions that follow:
Account for the softness and decrease in size of the potato cubes which were placed in sugar solution.
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उत्तर
Sugar solution is hypertonic to the potato cells, due to which exosmosis occurs and water flows out of the potato cells. The potato cell loses its distended appearance, the cytoplasm shrinks and the plasma membrane withdraws from the cell wall. The cells become limp or flaccid. This causes the softness and decrease in size of the potato cubes when placed in sugar solution.
संबंधित प्रश्न
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypertonic salt solution
Name the following:
The pressure with which the molecules of a substance diffuse.
Name the following:
The inward movement of solvent molecules through the plasma membrane of the cell.
Choose the correct answer:
If a marine plant is transferred to fresh water, it bursts due to ___________
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
Give a diagrammatic representation of plasmolysis in a cell.
Name the following:
The movement of a liquid through a selectively permeable membrane.
When a cell in solution shrinks and loses its shape, then the solution is ______.
Define the following term:
Tonicity
