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प्रश्न
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उत्तर
Plants die when salt is sprinkled over them due to plasmolysis of cells. The salt makes the solution hypertonic inside the plant cells which lead to shrinkage of cells or exosmosis.
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संबंधित प्रश्न
Differentiate between Turgor pressure and Wall pressure (explain)
Movement of molecules of a substance from the region of their higher concentration to the region of their lower concentration without the involvement a separating membrane, is called
When placed in a more concentrated solution, the cell contents will ______.
Define the following:
Osmosis
A leaf cell of a water plant was placed in a liquid other than pond water. After sometime, it assumed a shape as shown below:
Redraw in the space provided, the diagram of the cell if it is soon placed in ordinary water for some time.
Give Reasons for the following.
It is necessary to maintain a normal osmotic concentration of the blood.
The beaker is divided into two chambers A and B. The big circle represents solute and the small circles solvent.
(i) What can you say about the size of the holes in the membrane, if it is to behave semi- permeably between these two?
(ii) Will the solvent molecules pass through the membrane from left to right, from right to left, in either direction or in both directions?
(iii) In which direction will there be a net movement of solvent molecules?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The plasma membrane permits the passage of all solutes and water.
When a cell in solution shrinks and loses its shape, then the solution is ______.
