Experiment: Measuring the Rate of Transpiration

Question 1

what is a potometer?

Answer 1

a potometer is a device used to estimate transpiration rates

Question 2

how can a potometer be used to work out water uptake by the plant?

Answer 2

the distance moved by air bubble can be recorded every minute and used to indicate the rate of water uptake by the plant

Question 3

what is a potometer used for?

Answer 3

to measure the rate of water uptake from a leafy shoot - as 90% of this water is transpired, we use this as a measure of the rate of transpiration