Osmosis in Non-living Tissue
Activity: Demonstrating osmosis in non-living tissues
Material: Retort stand and clamp, thistle funnel, parchment paper, concentrated sugar solution, distilled water, beaker.
Method:
Fit a piece of parchment paper over the mouth of a thistle funnel.
Invert the funnel: the covered mouth will be at the bottom and the funnel is filled with concentrated sugar solution and is level with ink
A beaker is filled with water and then the funnel with the concentrated sugar solution is immersed into the beaker containing the water.
Clamp the tube of the thistle-funnel in a vertical position.
- Leave the setup for about 6 hours
Observation: The level of the sugar solution in the thistle funnel will rise. The water in the beaker will reduce
Conclusion: the water molecule in the beaker is high concentration of water molecules. The water will move from the beaker into the thistle funnel with the parchment paper serving as a semi-permeable membrane
Diagram