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Paper 6Alternative to PracticalPractical1 marks
Investigating the effect of temperature on transpiration rates in plants.
Method
Method for Measuring Transpiration
1. Set up a potometer with a plant shoot. 2. Place the potometer in a controlled environment chamber. 3. Adjust the temperature of the chamber. 4. Measure the distance the water level in the potometer falls over a set time period at different temperatures.
| Temperature (°C) | Water Loss (cm) |
|---|---|
| 20 | 2 |
| 25 | 4 |
| 30 | 6 |
| 35 | 8 |
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State the independent variable in this experiment.
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