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WAEC Biology 2001 Question 36

Question 36

Photosynthesis and Plant Nutrition

The correct equation for photosynthesis is

  1. A.C6H12O6 + 6O2 → (sunlight, chlorophyll) 6CO2 + 6H2O
  2. B.CO2 + H2O → (sunlight, chlorophyll) C6H12O2 + O2
  3. C.6CO2 + 6H2O → (sunlight, chlorophyll) C6H12O6 + 6O2
  4. D.6CO2 + 6H2O → (sunlight, chlorophyll) 6C6H12O6 + 6O2
Show the answer and explanation

Answer: C (6CO2 + 6H2O → (sunlight, chlorophyll) C6H12O6 + 6O2)

Explanation

Six molecules of carbon dioxide and six of water make one glucose molecule and six of oxygen; this is the only balanced option.