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WAEC Biology 2020 Question 25

Question 25

Photosynthesis and Plant Nutrition

An example of a trace element is

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

Answer: D (copper.)

Explanation

Trace elements (micronutrients) are needed in tiny amounts; copper is one. Potassium, calcium and magnesium are macronutrients needed in larger amounts.