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प्रश्न
Distinguish between the following:
Turgor pressure and osmotic pressure
उत्तर
| Turgor pressure | osmotic pressure |
| In a turgid cell , the pressure of the cell contents on the cell wall is called turgor pressure . | The pressure by which the water molecules tend to cross the semi-permeable membrance is called the osmotic pressure . |
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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?
A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?
Name the following:
The process by which raisins swell up when placed in a beaker of water.
Give Reasons for the following.
The raisins swell up in the water.
Give Reasons for the following.
We gargle with saline water in case of throat infection.
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.
Fill in the Blank
A plasmolysed cell has __________ protoplast.
Name the two organelles in a plant cell that contain their own genetic material and ribosomes.
When a cell in solution shrinks and loses its shape, then the solution is ______.
