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Chapter: Biology: Practical Botany

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Experiment to Demonstrate the Process of Osmosis with the help of Raisin

Requirements: Some Raisins, a bowl and water.

Experiment to Demonstrate the Process of Osmosis with the help of Raisin

 

Requirements: Some Raisins, a bowl and water.

 

Procedure: Let a bowl be taken and make it half filled with water. Now Put araisin in it and kept for observation.

 

Observation: After an hour it will be seen that the raisin becomes swollen byabsorbing water from the bowl by the process of osmosis.

 

Explanation: Outside the raisin there was only water in the bowl. the cell wallof the raisin is made of selectively permeable membrane and inside the cell there present concentrate sweet juice (Sugar solution) Thus water enters inside through the selectively permeable membrane, as a result the raisin has become fully swollen.

 

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