In phloem,the flow is always from

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(A) The translocation of solutes in the phloem always occurs from the source to the sink.$A$ 'source' is defined as the part of the plant that synthes

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Sugar source to sugar sink

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(A) The translocation of solutes in the phloem always occurs from the source to the sink.$A$ 'source' is defined as the part of the plant that synthesizes food (e.g.,mature leaves),while a 'sink' is the part that needs or stores food (e.g.,roots,fruits,or developing buds).This movement is driven by a pressure gradient,often referred to as the pressure-flow hypothesis or mass-flow hypothesis.Therefore,the flow is always from the sugar source to the sugar sink.

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