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JAMB Biology 1980 Question 49

Question 49

Transport in Plants

The amount of water loss from a leaf can be detected using

  1. A.lime-water
  2. B.red litmus paper
  3. C.blue litmus paper
  4. D.blue cobalt chloride paper
  5. E.pink cobalt chloride paper.
Show the answer and explanation

Answer: D (blue cobalt chloride paper)

Explanation

Dry blue cobalt chloride paper turns pink when it absorbs water given off by the leaf.