BRAINCAKEModelling Transpiration
It is difficult to watch water moving inside a living plant, so simple physical models are used to test whether the cohesion-tension theory is possible.
The porous pot model. An unglazed, porous clay pot is filled with water and sealed onto the top of a long, narrow glass tube. The tube is also filled with water, with no air bubbles, and its lower end stands in a beaker of water.
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More in Transport in Plants
- Apoplast Pathway
- Transpiration
- Cohesion-Tension Theory
- Adhesion and Capillarity
- Measuring the Rate of Water Uptake
- Factors Affecting Transpiration
- Root Pressure
- Translocation in the Phloem
All 21 lessons in Transport in Plants · All Edexcel AS-level Biology topics