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प्रश्न
Differentiate between the following:
Plasmolysis and deplasmolysis
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उत्तर
| Plasmolysis | Deplasmolysis | ||
| 1 | It refers to the shrinkage of the cytoplasm and withdrawal of the plasma membrane from the cell wall caused due to the withdrawal of water when placed in a hypertonic solution. | 1 | Deplasmolysis is the recovery of a plasmolysed cell when it is placed in water, wherein the cell's protoplasm again swells up due to the re-entry of water. |
| 2 | In Plasmolysis, the cell becomes flaccid. | 2 | In deplasmolysis, the cell becomes turgid. |
संबंधित प्रश्न
A candidate in order to study the process of osmosis has taken 3 potato cubes and put them in 3 different beakers containing 3 different solutions. After 24 hours, in the first beaker the potato cube increased in size, in the second beaker the potato cube decreased in size and in the third beaker there was no change in the size of the potato cube. The following diagram shows the result of the same experiment:
(i) Give the technical terms of the solutions used in beakers, 1, 2 and 3.
(ii) In beaker 3, the size of the potato cube remains the same. Explain the reason in brief.
(iii) Write the specific feature of the cell sap of root hairs which helps in absorption of water.
(iv) What is osmosis?
(v) How does a cell wall and a cell membrane differ in their permeability?
The space between the cell wall and plasma membrane in a plasmolysed cell is filled with ______.
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.
Explain why:
Bacteria and fungi do not grow in pickles, jams, jellies and squashes.
Define the cohesive force.
Give Reasons for the following.
The raisins swell up in the water.
Give Reasons for the following.
Drops of water on a leaf of plant like peepal does not enter the leaf by osmosis?
Name the following:
Condition of cell in which the cell content are shrunken.
Fill in the Blank
Raisin swells up when kept in a __________ solution.
Define the following term:
Tonicity
