Exercise
Form 14: Measuring Transpiration and Potometer Experiments
Explore experimental methods for measuring transpiration rates, including potometer setups. Learn how scientific apparatus is used to quantify plant water uptake and loss.
Questions
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MultiChoice
A potometer is a scientific apparatus used to measure:
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MultiChoice
What assumption is made when using a potometer to estimate transpiration rate?
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MultiChoice
Why is a reservoir with a tap included in a bubble potometer design?
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MultiChoice
What unit of measurement is typically used when recording potometer bubble movement?
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MultiChoice
If a leafy shoot in a potometer is exposed to an electric fan, what happens to bubble speed?
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MultiChoice
If a plastic bag is placed around leafy shoot in a potometer, what happens to bubble rate?
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MultiChoice
Why must all joints in a potometer apparatus be sealed with petroleum jelly (Vaseline)?
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MultiChoice
How does smearing petroleum jelly on lower surface of leaves affect transpiration measurement?
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MultiChoice
What happens to water uptake rate measured by potometer if light source is moved closer to shoot?
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MultiChoice
Why should a potometer shoot be cut at an angle underwater before setup?
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MultiChoice
In addition to transpiration, what small percentage of absorbed water is used by leafy shoot?
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MultiChoice
How can a mass potometer (weighing method) measure transpiration directly?