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प्रश्न
Give Reasons for the following.
Plants growing in fertilized soil are often found to wilt if the soil is not adequately watered. Why?
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उत्तर
The concentration of water molecules being less outside, endosmosis takes place resulting in the wilting of the plants.
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संबंधित प्रश्न
The highest water potential (capacity to move out higher concentrated solution) is that of ______.
Define the following:
Diffusion
Define the term:
Plasmolysis
Explain why:
Bacteria and fungi do not grow in pickles, jams, jellies and squashes.
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?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The plasma membrane permits the passage of all solutes and water.
Explain the Term: Endosmosis
When a cell in solution shrinks and loses its shape, then the solution is ______.
