define transpiration
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Answer:
Transpiration means the exhalation of water vapour through the small pores "stomata"from the leaves in plants.
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Explanation:
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 a lost by transpiration and guttation.