Question

how the passage of water molecules across rasins occured​

Answer 1

Answer:

If you keep raisin in pure water raisins absorbs water and swells up. Reason: Pure water has very very little solute concentration than the raisin, so osmosis occurs, water enters the raisin, and raisin swells up (It is also called end osmosis or deplasmolysis).

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Answer 2

Explanation:

The inward flow of liquid through the semi-permeable membrane of a cell is called endosmosis. Raisins, dry grapes when soaked in water overnight become plump due to endosmosis. ... Or in other words, the water gets diffused from a higher water potential (surrounding) to lower water potential (raisins).