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WAEC Biology 2007 Question 27

Question 27

Photosynthesis and Plant Nutrition

Micronutrients essential for the synthesis of chlorophyll include

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

Answer: B (iron and magnesium)

Explanation

Magnesium is part of the chlorophyll molecule and iron is needed to make it; lack of either causes yellow leaves (chlorosis).