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प्रश्न
उत्तर
| Diffusion | Osmosis |
| It is the movement of molecules of a substance from a region of higher concerntration to a region of lower concentration. | It is the process in which water molecules moves through a semi-permeable membrance from a region of higher concentration to a region of lower concentration . |
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संबंधित प्रश्न
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
Addition of salt to pickles prevents growth of bacteria because they turn turgid.
Leaves of the sensitive plant wilt and droop down on a slight touch. What mechanism brings about this change?
Define the following:
Diffusion
Explain why:
Bacteria and fungi do not grow in pickles, jams, jellies and squashes.
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.
We gargle with saline water in case of throat infection.
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
Give Technical Term for the following.
A solution whose concentration is equal to the cell sap.
Define the following term:
Tonicity
