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  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

Observation:

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

Inference:

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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