6.13 - Rate Calculations for Transpiration Flashcards
1
Q
What does measuring the uptake of water by a plant indicate?
A
It indicates the rate of transpiration, as water is only taken up if water leaves the plant.
2
Q
What instrument is used to measure water uptake in plants?
A
A potometer.
3
Q
How does a potometer work?
A
It involves placing a plant in a capillary tube in water and measuring the distance travelled by a bubble.
4
Q
What can be measured to determine the rate of transpiration?
A
The distance the bubble travels up the capillary tube in a set time (e.g., 1 minute).
5
Q
What does a greater distance travelled by the bubble indicate?
A
It indicates a greater rate of transpiration and thus a greater rate of water uptake.
