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प्रश्न
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उत्तर
Plants begin to die when concentrated solution of a fertilizer is given to potted plants because fertilizer along with soil water act as a hypertonic solution resulting in exosmosis.
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संबंधित प्रश्न
Give reason for the following:
Potato cubes, when placed in water, become firm and increase in size.
Leaves of the sensitive plant wilt and droop down on a slight touch. What mechanism brings about this change?
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypertonic salt solution
Name the following:
The pressure with which the molecules of a substance diffuse.
Name the following:
Two solutions having same concentrations.
Explain why:
We gargle with saline solution in case of throat infection.
Mention whether the following statement is true (T) or false (F) and give explanation in support of your answer.
Plasmolysis is reverse of deplasmolysis.
Give Reasons for the following.
We gargle with saline water in case of throat infection.
The diagram given below is of an experiment just at the start. Study the diagram carefully and answer the following questions :
(i) What does the experiment demonstrate?
(ii) Define, the process demonstrated in the experiment.
(iii) What changes are observed after a few hours?
(iv) Give two examples of a semi-permeable membrane.
(v) Which limb of the U-tube contains a more concentrated sucrose solution, A or B?
(vi) Why is the membrane separating the two solutions labeled as semi-permeable membrane?
Fill in the Blank
The pressure which develops in the cortical cells of root which force a part of the water upward ____________.
