A group of students carry out an experiment to study the effect of environmental factor on the rate of transpiration of a balsam plant. Design a laboratory experiment to determine the effect of the temperature on the rate of transpiration .
http://cd1.edb.hkedcity.net/cd/science/biology/resources/L&t2/practical/Practical-24.pdf
http://en.wikipedia.org/wiki/Potometer
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