Question

define transpiration​

Answer 1

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Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 97–99.5% is lost by transpiration and guttation.

Explanation:

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Answer 2

Answer:

(of a plant or leaf) the exhalation of water vapour through the stomata.

"plants lose more than 90 per cent of their water through transpiration"