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Measurement of Transpiration by Indirect Evaporation.

There is uneq...

Question

There is unequal transpiration from the two surfaces of a dorsiventral leaf.

A

True

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B

False

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Solution

The correct option is A
True

The number of stomata is more on the lower surface of a dorsiventral leaf, so more transpiration occurs from the lower (dorsal) surface of the leaf than upper (ventral) surface. And hence there is unequal transpiration occurs from the two sides in leaves.

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Q. More transpiration occurs from the lower surface of a dorsiventral leaf. Give suitable explanation.

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Q. The apparatus shown in the following diagram is Garreau's photometer designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Before keeping the leaf in between the cups, anhydrous calcium chloride

(C a c l_{2})

contained in two small vials were weighed and placed in both the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After few hours,

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Q. The apparatus shown in the following diagram is Garreau's potometer designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Before keeping the leaf in between the cups, anhydrous calcium chloride

(C a c l_{2})

contained in two small vials were weighed and placed in both the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After few hours,

C a c l_{2}

vials were taken out and weighed again.
What was the purpose of using a manometer?

Q. The apparatus shown in the following diagram is Garreau's potometer designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Before keeping the leaf in between the cups, anhydrous calcium chloride

(C a C l_{2})

contained in two small vials were weighed and placed in both the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After few hours,

C a C l_{2}

vials were taken out and weighed again.
What is the purpose of keeping

C a C l_{2}

vials inside the cup?

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Measurement of Transpiration by Indirect Evaporation.

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