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  • Created by: Abbie
  • Created on: 08-01-13 11:09


Translocation is the movement of assimilates (nutrients), but mainly sucrose, up or down the phloem

It starts at the source and ends at the sink

  • The source can be a leaf because sucrose is made there by photosynthesis
  • Sucrose is actively loaded into the phloem by the companion cells - H+ ions are pumped out of the cell and then brought back in in a cotransporter along with sucrose (using ATP)
  • Sucrose then goes into the sieve tubes through the…


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