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प्रश्न
Name the following:
The movement of a liquid through a selectively permeable membrane.
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उत्तर
Osmosis
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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.
Give reason for the following:
Potato cubes, when placed in water, become firm and increase in size.
Two potato cubes each 1 cm3 in size, were placed separately in two containers (A&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 had somewhat decreased in size. Use the above information to answer the questions that follow:
Account for the firmness and increase in the size of the potato cubes placed in water.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypotonic salt solution
Name the following:
The process by which raisins swell up when placed in a beaker of water.
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?
Give Technical Term for the following.
A solution whose concentration is equal to the cell sap.
Name the following:
The process by which raisins swell up when placed in a beaker of water.
Explain the Term:
Osmosis
Define the following term:
Osmotic Pressure
