Biology 5090 · O Level · Diffusion and osmosis

Diffusion and osmosis — practice question

The paragraph below explains how water is absorbed by roots. Root hair cells have ......1...... cell walls, which help them take in water. The cytoplasm in the cell has a ......2...... water potential than the soil water, so water enters the root hair cell from the soil by ......3...... . Which words correctly fill spaces 1, 2 and 3?

  • A1: large; 2: larger; 3: diffusion
  • B1: permeable; 2: higher; 3: diffusion
  • C1: permeable; 2: lower; 3: osmosis
  • D1: rigid; 2: higher; 3: active transport

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