Required practical 3: Effects of osmosis on plant tissue.

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Required practical 3: Effects of osmosis on plant tissue 

I should be able to: 

  • Describe how to investigate the effects of osmosis on plant tissue. 

  • Calculate percentage change. 

Osmosis 

  • Osmosis is the diffusion of water from a dilute solution to a concentration solution across a partially permeable membrane.  

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  • When a plant cell is placed in water, then water will move into the cell by osmosis and the plant cell will expand.  

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  • If we place the plant cell into a concentrated solution, then water moves out of the plant cell by osmosis. This causes the cell to shrink. 

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  • First, we peel the potato. That is because the potato skin can affect osmosis. 

  • Use a cork borer to produce three cylinders of potato. Using a cork borer makes all the cylinders the same diameter. 

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