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प्रश्न
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?
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उत्तर
(i) The process of osmosis.
(ii) Osmosis is a special type of diffusion of solvent molecules through a semi-permeable membrane from a region of their higher concentration to the lower concentration region, but not vice versa.
(iii) The level of water in column A will rise along with the passage of time and will ultimately stop when the concentration of water molecules are equal on both sides of the membrane.
(iv) (a) Parchment paper, (b) Egg membrane.
(v) Solution A.
(vi) It permits the movement of only water molecules to pass through it.
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संबंधित प्रश्न
A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?
(a) Mention whether the following statement is true (True) or false (False)
(b) Correct the false statement by altering the last word only.
A plant cell placed in hypotonic solution gets Plasmolysed.
Choose the correct answer:
If a marine plant is transferred to fresh water, it bursts due to ___________
Mention whether the following statement is true (T) or false (F) and give explanation in support of your answer.
Plasmolysis is reverse of deplasmolysis.
What do you mean by transpiration pull ?
Give at least three uses of water to green plants
What is the water potential?
Differentiate between:
Osmosis and Diffusion
The beaker is divided into two chambers A and B. The big circle represents solute and the small circles solvent.
(i) What can you say about the size of the holes in the membrane, if it is to behave semi- permeably between these two?
(ii) Will the solvent molecules pass through the membrane from left to right, from right to left, in either direction or in both directions?
(iii) In which direction will there be a net movement of solvent molecules?
Define the following term:
Tonicity
