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प्रश्न
Give Reasons for the following.
The raisins swell up in the water.
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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
Name the following:
The condition of a cell placed in a hypotonic solution.
The diagram given below represents an experimental set-up to demonstrate a certain process. Study the same and answer the questions that follow:
- Name the process.
- Define the above-named process.
- What would you observe in the experimental set-up after an hour or so?
- What control experiment can be set up for comparison?
- Keeping in mind the root hair, cell and its surroundings, name the parts that correspond to
- concentrated sugar solution
- parchment paper
- water in the beaker
- Name any other material that can be used instead of parchment paper in the above experiment.
- Mention two advantages of the process for the plants.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypertonic salt solution
Name the following:
The inward movement of solvent molecules through the plasma membrane of the cell.
Explain why:
We gargle with saline solution in case of throat infection.
What is the significance of diffusion?
Give Reasons for the following.
On sprinkling common salt on grass growing in a lawn, the grass is killed.
Give Reasons for the following.
We gargle with saline water in case of throat infection.
Name the following:
The movement of a liquid through a selectively permeable membrane.
Multiple Choice Question:
Plasma membrane controls:
