Why does transpirationprovide a cooling effect on the plant ❔
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Explanation:
- When water vapour is transpired from leaves into the atmosphere, the plant and surrounding air is cooled down.
- Transpiration Cooling Energy is needed to evaporate liquid water into water vapour.
- Energy is absorbed into liquid water and this reduces the temperature of the surrounding plant tissue and nearby atmosphere.
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Cooling of the plant: the loss of water vapour from the plant cools down the plant when the weather is very hot. The transpirational pull: when the plant loses water through transpiration from the leaves, water and mineral salts from the stem and roots moves, or is `pulled', upwards into the leaves.
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