Question

transpiration is a necessary evil​

Answer 1

Answer:

As we all know, transpiration is the natural process of removing the excess water in the form of vapours from the aerial parts of the plant called stomata. ... Transpiration is called necessary evil because the increase in the rate of transpiration results in drying up (wilting) of the leaves.

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Answer 2

Transpiration is the loss of water by evaporation in terrestrial plants, especially through the stomata; accompanied by a corresponding uptake from the roots. It is necessary for plants to transpire to lose excess water.