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Unilorin Post-UTME Biology 2022 (Model questions) Question 14

Question 14

Transport in Plants

What force is responsible for the movement of water to the top of tall trees?

  1. A.transpiration pull
  2. B.root pressure
  3. C.diffusion
  4. D.capitallary pressure
Show the answer and explanation

Answer: A (transpiration pull)

Explanation

Water evaporating from leaves pulls a continuous column of water up the xylem; this transpiration pull lifts water to the tops of tall trees.