Biology 9700 · AS & A Level · Transport mechanisms

Transport mechanisms — practice question

Which row gives the correct identification of sources and sinks of sugars?

  • Aroot cells absorbing mineral ions - sink; storage cells of seed that is starting to grow - source
  • Broot cells absorbing mineral ions - sink; storage cells of seed that is starting to grow - sink
  • Croot cells absorbing mineral ions - source; storage cells of seed that is starting to grow - source
  • Droot cells absorbing mineral ions - source; storage cells of seed that is starting to grow - sink

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