_______________ can be proved by an experiment in which pieces of dry cobalt paper attached to the two surface of the leaf.

more transpiration occurs from upper surface

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more transpiration occurs from lower surface

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more transpiration occurs from both upper and lower surface

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transpiration is not taking place

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Solution

The correct option is B
more transpiration occurs from lower surface

More transpiration occurs from the lower surface can be proved by an experiment in which pieces of dry cobalt paper attached to the two surface of the leaf.

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Similar questions

Which of the following statements are true and which ones are false? Give reason in support of your answer.

(a) Potometer is an instrument used for demonstration of transpiration occurring from the lower surface of a leaf.

(b) Hydathodes are similar to stomata in plant physiology.

(d) Some desert plants have sunken stomata on their leaves.

(e) Most transpiration occurs during midday.

Give suitable explanation for the following :

(a) A higher rate of transpiration is recorded on a windy day rather than on a calm day.

(b) Excessive transpiration results in the wilting of the leaves.

(d) More transpiration occurs from the lower surface of a dorsiventral leaf.

(e) Cork and bark of trees help in preventing loss of water.

(f) Perspiration and transpiration help to cool the body temperature of the organism.

(g) On a bright sunny day, the leaves of certain plants roll up.

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