- Potometer--> measures Transpiration (water evaporating off the leaf)
- Insert a plant stem (with leaves) into a piece of plastic tubing
- Connect the tube to a length of glass tubing full of water and put a bung on it
- Make sure there is no air in the equipment -i.e set it up underwater
- Measure Transpiration by the movement of an air bubble.
- Allow a small amount of air into the class tube.
- As water is taken up by the plant, the bubble will be seen to move along the tube, and marks made along the side of the tube allow the bubble's rate of progress to be measured.
5. Plants 2.17-2.22 2.39-2.43 2.51-2.56 2.67 Reproduction and inheritance 3.1 3.14 3.15 3.28 2.79-2.81 3.1-3.8
Friday, March 11, 2011
Potometer
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