Biology 5090 · O Level · Active transport

Active transport — practice question

Which transport of a substance in plants needs energy?

  • Aabsorption of carbon dioxide by a palisade cell
  • Bloss of water into the air spaces of a leaf
  • Cnitrate uptake by root hair cells
  • Dtransport of water up through the xylem

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI