The apparatus shown in the following diagram is Garreau's potometer designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Equal amounts of calcium chloride (CaCl2) were taken in two vials, which were placed in two cups. The leaf was placed between the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After a few hours, CaC12 vials were taken out and weighed again.
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What is the purpose of keeping Cacl3 vials inside the cups?
After few hours Cacl3 vials were taken out and weigh again. Will you expect any differences in weight? If so give a reason.
What was the use of manometer?
What do you mean by transpiration?
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Important Questions on Transpiration
Look the experiment shown below. Suppose you took a single flower with a long stalk dipping in water instead of a leafy twig. Will it serve the purpose? Yes/No, give reason.
Out of the three kinds of transpiration, which one is maximum and which one is minimum?
Maximum _____
Minimum _____
How will the following conditions affect transpiration?
Mid day high temperature
How will the following conditions affect transpiration?
Dry air
