GCSE Biology Watch

DaQuestioner
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Why must water vapour escape from the plant in transpiration; what good does this do?
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Steve445
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http://lmgtfy.com/?q=Why+do+plants+need+to+transpire%3F
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Steve445
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To allow carbon dioxide to enter by the process of gas exchange. I got those answers just by using Google.
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Max1989
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It alows a constant uptake of water to reach the leaves as water is sticky and gets pulled up in a constant stream, where it is used in photosynthesis. Also water going up the stem helps with keeping it ridgid. If it did not evaporate then it would take too much energy for the plant to push teh water up itself and it would die, as it needs the water to reach it's leaves, for glucose to be synthesised and that used in respiration to make ATP (energy, don't know the GCSE terms alowed).
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