(a) List factors affecting the rate of transpiration.
(b) How do light, wind, and humidity affect the rate of transpiration? [4 MARKS]

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Solution

Each Part: 2 Marks

(a) The following factors affect the rate of transpiration:
(i) Intensity of sunlight
(ii) Temperature
(iii) Velocity of wind
(iv) Humidity
(v) Water content of the leaves

(b) High intensity of light and strong wind increase the rate of transpiration while more humidity decreases the rate of transpiration.

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Briefly explain how the rate of transpiration is affected by

(a) Intensity of light

(b) Humidity of the atmosphere.

Compared to a dry day, how would the rate of transpiration be affected on a humid day?

Which of the following external factors affect the rate of transpiration?

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