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प्रश्न
Define the following:
Osmosis
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उत्तर
Osmosis - Osmosis is the movement of solvent molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.
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संबंधित प्रश्न
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypertonic salt solution
Define the term:
Plasmolysis
Give Reasons for the following.
Plants growing in fertilized soil are often found to wilt if the soil is not adequately watered. Why?
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
In the figure below ‘A’ shows a cell in the normal state and ‘B’ shows the same cell after leaving it in a certain solution for a few minutes.
(i) Describe the change which has occurred in the cell as seen in B.
(ii) Give the technical term for the condition of the cell as reached in B and as it was in A.
(iii) Define the process which led to this condition.
(iv) What was the solution-isotonic, hypotonic or hypertonic, in which the cell was kept?
(v) How can the cell in B, be brought back to its original condition?
(vi) Name the parts numbered 1 to 3.
Name the following:
Condition of cell in which the cell content are shrunken.
Fill in the Blanks
Diffusion is the movement of molecules from a region of their ________ concentration to the region of their ________ concentration.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Plasmolysis makes the cell turgid.
Define the following term:
Tonicity
