Other questions in this quiz

2. What is the cause of cohesive forces?

  • Disulfide bonds
  • Root pressure
  • Hydrogen bonds
  • Ionic bonds

3. What is the purpose of moving water molecules into the sympastic pathway?

  • To control whether certain substances enter the xylem
  • To stop water loss
  • To increase a water potential

4. Why are root hair cells efficient water and ion exchange surfaces?

  • They provide a large surface area and thick diffusion pathway
  • They provide a large surface area and thin diffusion pathway
  • They provide a small surface area and thin diffusion pathway
  • They provide a small surface area and thick diffusion pathway

5. 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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