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Part of the woody conductive tissue of higher plants; see there.

Term for the tissue located in the cambium (growth layer below the bark) in higher plants such as the vine. This transports nutrients and water from the roots to the tips of the shoots. The amazing transport speed is half a metre to one metre per hour. A distinction is made between two different, completely separate transport paths. The xylem consists of wide, thick-walled tubes through which the water absorbed by the root hairs, with minerals and organic substances dissolved in it, flows upwards. The wood is formed from parts of this. The phloem (sieve part) consists of narrow and thin-walled tubes through which...

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Andreas Essl
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