AQA Biology A Level - Translocation Question Watch

strenzo
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Can someone explain the translocation mass flow hypothesis please?

What I'm not sure about is wheter during the loading into the phloem stage, does the active transport occur

- between the palisade and companion cell (then facilitated diffusion from companion cell into phloem)
- between the companion cell and the phloem (after facilitated diffusion from palisade to companion cell)
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