The process in which atmospheric carbon dioxide is converted into carbohydrates during photosynthesis is
- AOxidation
- BReduction
- CHydrolysis
- DMore than one of the above
- ENone of the above
Show answer and explanation
Correct answer: (b) Reduction
Explanation
In photosynthesis, 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂, carbon dioxide gains hydrogen and loses oxygen as it becomes glucose: that is reduction.
At the same time water is oxidised to oxygen gas. Light energy, captured by chlorophyll, drives the reduction.