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Question

Excessive transpiration results in the wilting of the leaves. Give suitable explanation.

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Solution

Leaves of some plants wilt during midday and recover in the evening. In some plants, e.g. Balsam, the leaves of the plants wilt during the midday in spite of the fact that there is plenty of water in the soil. In such cases, the rate of transpiration during midday exceeds the rate of absorption of water by the roots. The cells, therefore, lose turgidity. So, excessive transpiration results in wilting of the leaves.

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