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प्रश्न
The rate of transpiration is determined with a/an ______.
पर्याय
potometer
evaporimeter
atmometer
perimeter
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उत्तर
The rate of transpiration is determined with a/an potometer.
Explanation:
A potometer (such as Ganong’s potometer) is a specialised laboratory instrument used to measure the rate of water uptake by a leafy shoot, which is directly proportional to the rate of transpiration. It functions by tracking the movement of a tiny air bubble along a graduated capillary tube as the plant transpires and draws water. In contrast, evaporimeters and atmometers measure overall evaporation from open surfaces, while a perimeter is used in ophthalmology to test visual fields.
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संबंधित प्रश्न
With decrease in atmospheric pressure, the rate of transpiration will
The loss of water as water vapour from the acrial parts of a plant is known as
Give suitable explanation for the following:
Excessive transpiration results in the wilting of the leaves.
Mention any three methods by which the plants tend to reduce transpiration.
Choose the correct answer:
Rate of transpiration is more, when __________
Briefly explain how the rate of transpiration is affected by:
The humidity of the atmosphere.
“A higher rate of transpiration is recorded on a windy day rather than on a calm day.” Explain.
How does the rate of Transpiration differ when there is High humidity?
Name three extrinsic factors which decrease the rate of transpiration.
(a) State whether the following statement are True or False.
(b) Rewrite the false statement in (a) above in the correct form by changing either the first or the last word only.
Atmospheric humidity promotes transpiration from a green plant.
