Biology 9700 · AS & A Level · Movement into and out of cells

Movement into and out of cells — practice question

The graph presents the findings from measuring the concentration of sucrose in the xylem, phloem and leaves of a plant over 24 hours. Which conclusion can be drawn from these findings?

  • AOsmosis moves water from the xylem to the phloem.
  • BSucrose is actively transported into the phloem from the leaves.
  • CSucrose is moved in both directions in the phloem.
  • DXylem tissue uses sucrose as a source of energy.

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