Which set correctly identifies the reactants required for photosynthesis in plants?

• A. Glucose and oxygen
• B. Carbon dioxide and water (with light energy input)
• C. Carbon dioxide and glucose
• D. Nitrogen gas and water

Answer: (B)

Verified step by step guidance

1. Understand that photosynthesis is the process by which plants convert light energy into chemical energy stored in glucose.
2. Recall the general photosynthesis equation: \$6\ \text{CO}_2 + 6\ \text{H}_2\text{O} + \text{light energy} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + 6\ \text{O}_2$.
3. Identify the reactants on the left side of the equation, which are carbon dioxide (\(\text{CO}_2\)) and water (\(\text{H}_2\text{O}\)), along with light energy as an input.
4. Recognize that glucose (\(\text{C}_6\text{H}_{12}\text{O}_6\)) and oxygen (\(\text{O}_2\)) are products, not reactants, so options listing them as reactants are incorrect.
5. Conclude that the correct set of reactants required for photosynthesis is carbon dioxide and water, with light energy input.