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JAMB Biology 1994 Question 13

Question 13

Photosynthesis and Plant Nutrition

The failure of transport and respiratory systems in plants as well as the presence of reddish colour in stems and leaves result from the deficiency of

  1. A.magnesium
  2. B.nitrogen
  3. C.potassium
  4. D.phosphorus.
Show the answer and explanation

Answer: D (phosphorus.)

Explanation

Phosphorus is part of ATP, so lack of it upsets respiration and transport, and the leaves and stems turn dull purplish-red.