Which of the following is used to determine the rate of transpiration in plants?
Correct answer: B. Potometer
- A. Hygrometer
- B. Potometer
- C. Auxanometer
- D. Tensiometer/Barometer
Explanation
Under normal circumstances, the rate of water uptake gives a measure of the rate of transpiration. A simple potometer is a piece of capillary tubing to which a plant has been connected. The water uptake is measured by recording the time taken for a bubble in the tube to move a set distance. So option C is correct.
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