Unit 2: Transport of Water Through Plants

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1. How does water move from the soil into a root hair cell?

  • Against a water potential gradient
  • Down a water potential gradient
  • Up a water potential gradient
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Other questions in this quiz

2. At which time of day is the diameter of a tree at its smallest?

  • Dawn
  • Night
  • Day
  • Twilight

3. How do water molecules move along the symplastic pathway?

  • Down a water potential gradient
  • Up a water potential gradient
  • Cohesive forces force water along

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

  • Root pressure increases with temperature increases
  • Xylem sap exudes from cut stems of certain plants at certain times
  • Tree trunks change in diameter according to the rate of transpiration
  • Metabolic inhibitors e.g. cyanide can cause root pressure to cease

5. Root pressure is a weak force

  • True
  • False

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