Photosynthesis is an oxidation-reduction process in which:
Correct answer: B. Water is oxidized and carbon dioxide is reduced
- A. Carbon dioxide is oxidized and water is reduced
- B. Water is oxidized and carbon dioxide is reduced
- C. Both CO₂ and water are oxidized
- D. Both CO₂ and water are reduced
Explanation
Photosynthesis is a redox process where light energy is used to convert water and carbon dioxide into glucose and oxygen. In this process, water (H₂O) is oxidized, meaning it loses electrons, and oxygen is released as a byproduct. Carbon dioxide (CO2), on the other hand, is reduced by gaining electrons to form glucose (C6H12O6). This transformation is crucial for converting solar energy into chemical energy. Option B is correct because it accurately describes the electron flow in this process. Options A, C, and D are incorrect, as they either reverse the roles of CO₂ and water or incorrectly claim both undergo the same redox reaction.
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