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प्रश्न
Explain the term:
Plasmolysis
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उत्तर
- When a living cell is placed in a hypertonic solution, exo-osmosis occurs. This is called plasmolysis.
- During plasmolysis, the protoplast of the cell shrinks and recedes from the cell wall, causing the cell to become flaccid. Such a cell is called a plasmolysed cell.
- In a plasmolyzed cell, a gap is developed between the cell wall and the protoplast. This gap is filled by the outer solution.
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.
Movement of molecules of a substance from the region of their higher concentration to the region of their lower concentration without the involvement a separating membrane, is called
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The shrinkage of protoplasm, when a cell is kept in hypotonic solution.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypertonic salt solution
Distinguish between the following:
Filtration and diffusion
Distinguish between the following:
Turgor pressure and osmotic pressure
Name the following:
Condition of cell in which the cell contents are shrunken.
Choose the correct answer:
Plasmolysis will occur when the cell is placed in a __________
Define the cohesive force.
Give Reasons for the following.
Freshwater fish cannot survive in seawater.
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
Differentiate between the following
Endosmosis and Exosmosis
Give Technical Term for the following.
The condition in which the water from a cell is completely removed due to exosmosis and no more shrinkage is possible.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
During exosmosis, water moves from inside the cell to the outside of the cell.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Cells that have lost their water content are said to be deplasmolysed.
Multiple Choice Question:
In the process of osmosis in a cell:
When a cell in solution shrinks and loses its shape, then the solution is ______.
