In thorn forests and scrubs, why are leaves of trees mostly thick and small?

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To maximise evaporation

To minimise evaporation

To reduce moisture

To do nothing

answer is B.

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Detailed Solution

In thorn forests and scrubs, leaves of trees are mostly thick and small to minimise evaporation. In drier regions, these woods give way to thorn forests and scrubs. Thorny trees and bushes make up the natural vegetation in areas with less than 70 cm of annual rainfall. This kind of vegetation can be found in the semi-arid regions of Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Uttar Pradesh, and Haryana in the country's northwest. The predominant plant species are cactus, euphorbias, acacias, and palms. Rats, mice, rabbits, wolves, tigers, lions, wild asses, horses, and camels are among the prevalent animals in these forests.

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