Biology 5090 · O Level · Active transport

Active transport — practice question

A plant is growing in fertile soil that is well supplied with water. It takes in nitrate ions by active transport and absorbs water by osmosis. How do the concentrations of nitrate ions and water in the plant’s roots compare with the concentrations in the soil?

  • Aconcentration of nitrate ions in the roots: higher; concentration of water in the roots: higher
  • Bconcentration of nitrate ions in the roots: higher; concentration of water in the roots: lower
  • Cconcentration of nitrate ions in the roots: lower; concentration of water in the roots: higher
  • Dconcentration of nitrate ions in the roots: lower; concentration of water in the roots: lower

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