1.

Given below is the diagram of an apparatus set up to study a very important physiological process :(i) Name the process being studied (ii) Explain the process.(iii) What change would you observe in the thistle funnel containing sugar solution after about 10 minutes ?(iv) Is sugar solution hypertonic or hypotonic ?(v) Name the part of the plant cell which is represented by the sugar solution.(vi) Explain why much salt is added to pickles.

Answer»

(i) Osmosis.

(ii) It is the movement of solvent molecules from a region of their high concentration to their low concentration through a semi-permeable membrane.

(iii) Level of solutions will rise.

(iv) Hyperlonic.

(v) Cell sap.

(vi) Much salt is added tar pickles so that a hypertonic solution is formed around the vegetable pieces. Any fungi etc. attacking the preserved food will die due to plasmolysis by the solution.



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