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प्रश्न
Name the following:
The process by which raisins swell up when placed in a beaker of water.
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उत्तर
Osmosis
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संबंधित प्रश्न
Give appropriate biological or technical terms for the following :
Movement of molecules of a substance from their higher concentration to lower concentration when they are in direct contact.
Give reason for the following:
Potato cubes, when placed in water, become firm and increase in size.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypotonic salt solution
Name the following:
The inward movement of solvent molecules through the plasma membrane of the cell.
Name the following:
Movement of molecules from a region of high concentration to a region of low concentration.
Choose the correct answer:
Grapes when placed in a strong sugar solution shrink because of __________
What is the significance of diffusion?
Give Reasons for the following.
We gargle with saline water in case of throat infection.
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.
