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प्रश्न
Explain the Term: Exosmosis
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उत्तर
Exosmosis: It is the movement of water molecules from the cell into the outer surroundings.
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संबंधित प्रश्न
Give two examples of turgor movements in plants.
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.
Name the following:
Two solutions having same concentrations.
Choose the correct answer:
Grapes when placed in a strong sugar solution shrink because of __________
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.
A solution whose concentration is greater than that of the cell sap.
Explain the Term:
Osmosis
Name the two organelles in a plant cell that contain their own genetic material and ribosomes.
