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The Fundamental Unit of Life — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life3 Marks
Question

Set up an experiment to demonstrate osmosis.

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Answer

Put dried raisins and apricots in pure water and leave them for some time. Then place them into a concentrated Solution of sugar or salt. Each one of them gains water and swells when placed in pure water due to endosmosis. When such swollen raisins/ apricots are placed in the concentrated Solution, each of them loses, water, and consequently shrinks again (due to exosmosis).

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