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प्रश्न
Give Reasons for the following.
The raisins swell up in the water.
उत्तर
The raisins are dry grapes. When these are kept in water, it enters into the raisins by osmosis (endosmosis) and raisins swell up.
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संबंधित प्रश्न
Give the equivalent terms for the following:
Pressure of the cell contents on the cell wall
Distinguish between the following:
Filtration and diffusion
Distinguish between the following:
Turgor pressure and osmotic pressure
Choose the correct answer:
Cell turgidity is caused by _______________
What is the water potential?
In an experiment, two sets of apparatus were set up as shown below:
In A there is a concentrated sugar solution inside the thistle funnel and red ink in the water outside the funnel. In B there is a concentrated glucose solution with red ink inside the thistle funnel and water outside the thistle funnel.
In both A and B the level of liquid inside the funnels rises up the tubes. In A the sugar solution turns red and in B, the water turns red.
Study the given observations and answer these questions:
- Name the process by which red ink moves in A and B.
- Which type of pressure forces the water molecules to move towards thistle funnels and cause a rise in the water level?
- Where does this process occur in plants and animals?
- What material could be used as a semi-permeable membrane?
Give Technical Term for the following.
Solutions which have the same osmotic pressure.
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.
