#osmosis

#class 9th cell osmosis exercise practical #

Aim of the experiment :-To demonstrate osmosis experiment with potato

Apparatus required:- 4 transparent bowl, 2potato, Sugar, salt, water

Procedure: -Take four peeled potato halves and scoos each one out to make potato cups. One of these potato cups should be made from a boiled potato. put each potato cup in a trough containing water. Now (A) keep A cup empty
(B) put one teaspoon sugar in cup B
(C) put one teaspoon salt in cup C
(D) put one teaspoon sugar in the boiled potato cup D
keep these for 2 hours. Then observe the four potato cups .

Observation: -water will gather in the hollowed portion of B and C cup. water Will not gather in the hollowed portion of A and D cup.


Conclusion:- Water will gather in the hollowed portion of B and C due to difference in the concentration of water in the through and in water in cup. But water will not gather in the hollowed portion of A and D.Because A doesn't have change in concentration of water flow and for osmosis , concentration should be higher than other. In cup D cells are dead and osmosis not takes place in dead cell.