If temperature remains constant then with increasing alttitude, the transpiration will

Increases

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Decreases

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First increases then decreases

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Unaffected

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Solution

The correct option is A Increases
At low atmospheric pressure at high altitude, the rate of transpiration is increased. Plants growing at high hill-top show normal rate because the higher rate due to low atmospheric pressure is neutralised by low temperature. The plants growing at high altutudes show xeromorphy to minimise transpiration.

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