Why conduction by phloem needs energy?
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Transport in the phloem is therefore both up and down the stem. Transport of substances in the phloem is called translocation . ... Companion cells - transport of substances in the phloem requires energy. One or more companion cells attached to each sieve tube provide this energy.
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Transport in the phloem is therefore both up and down the stem. Transport of substances in the phloem is called translocation . ... Companion cells - transport of substances in the phloem requires energy. One or more companion cells attached to each sieve tube provide this energy.
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