Unit 2: Transport of Water Through Plants

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1. Which one of these is NOT evidence for root pressure?

  • Root pressure increases with temperature increases
  • Tree trunks change in diameter according to the rate of transpiration
  • Metabolic inhibitors e.g. cyanide can cause root pressure to cease
  • Xylem sap exudes from cut stems of certain plants at certain times
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2. Why is water able to move through the cell walls?

  • Cell walls have a mesh-like structure
  • Cell walls have proteins that carry water molecules
  • Cell walls are soluble
  • Cell walls have long tubes made for carrying water

3. Water moves into root hair cells by which process?

  • Osmosis
  • Diffusion
  • Active Transport

4. What are cell walls made of?

  • Glucose
  • Cellulose
  • Phospholipids
  • Lignin

5. Cohesion-tension is much stronger than root pressure

  • True
  • False


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