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WAEC Biology 2017 Question 6

Question 6

Transport in Plants

An example of osmosis in plants is the

  1. A.movement of water through the xylem.
  2. B.loss of water vapour from the stomata.
  3. C.translocation of food through the phloem.
  4. D.absorption of water from the soil by the root.
Show the answer and explanation

Answer: D (absorption of water from the soil by the root.)

Explanation

Root hair cells have a more concentrated cell sap than soil water, so water passes into them across the cell membrane by osmosis.