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Biology · May / June 2020 · Paper 12 · Question 2

5090Active transport

Which movement of a substance in plants is an energy-consuming process?

  1. Aabsorption of carbon dioxide by a palisade cell
  2. Babsorption of oxygen by a mesophyll cell
  3. Cnitrate uptake by root hair cells
  4. Dtransport of water up through the xylem

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Correct answer: C. nitrate uptake by root hair cells

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