Final answer:
In photosynthesis, water (H₂O) and carbon dioxide (CO₂) are the reactants, and G3P (a precursor to glucose) and oxygen (O₂) are the final products. Sunlight is also required for the process to occur.
Step-by-step explanation:
The correct statement regarding the reactants and products of photosynthesis is that water (H₂O) and carbon dioxide (CO₂) are the reactants, while glucose (C₆H₁₂O₆) and oxygen (O₂) are the products. To clarify, option d is correct: In photosynthesis, water and carbon dioxide are reactants. G3P (glyceraldehyde 3-phosphate, a molecule that forms glucose) and oxygen are products. Photosynthesis also requires sunlight to provide the energy needed for the process. The light-dependent reactions of photosynthesis use water and convert light energy into chemical energy stored in ATP and NADPH. Subsequently, these molecules enter the Calvin Cycle, where CO₂ is fixed into organic molecules like G3P, eventually leading to the synthesis of glucose.