Demonstration of Osmosis

Demonstration of Osmosis:

The procedure of osmosis might be explained by the simple osmometer that is also termed as the thistle funnel experiment.

Potato Osmoscope:

Explanation of osmosis in a living system can be done employing the potato osmoscope.

A potato is peeled and one side is flattened that serves as the base. A cavity is made in the potato and is filled with concentrated sugar solution and a pin mark is made to point out the initial level. This potato is then positioned in a beaker having colored water for some time.

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 Figure: Potato osmoscope


It is noticed that the sugar solution in the cavity of the potato becomes colored and level increases.


This confirms the entry of water into the sugar solution via the potato tissues that serve as the selectively permeable membrane.

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