What are the inputs and outputs of photosynthesis?

What are the inputs and outputs of photosynthesis?

• A. CO2 + H2O -> Glucose + O2
• B. O2 + Glucose -> CO2 + H2O
• C. CO2 -> Carbon
• D. H2O + O2 -> Glucose + CO2

Answer: (A)

Plants convert light energy into chemical energy stored in glucose while releasing oxygen. This process uses carbon dioxide and water as starting materials, with energy from sunlight driving the chemical reactions in chloroplasts. The correct option reflects this by showing inputs of CO2 and H2O and outputs of glucose and O2, illustrating what the plant produces from what it takes in. The other statements describe different ideas: respiration uses glucose and oxygen to produce carbon dioxide and water; a statement about turning CO2 into carbon misses the synthesis of a carbohydrate; and a variant that combines water and oxygen to yield glucose and carbon dioxide inverts the actual inputs and outputs of photosynthesis.

Plants convert light energy into chemical energy stored in glucose while releasing oxygen. This process uses carbon dioxide and water as starting materials, with energy from sunlight driving the chemical reactions in chloroplasts. The correct option reflects this by showing inputs of CO2 and H2O and outputs of glucose and O2, illustrating what the plant produces from what it takes in. The other statements describe different ideas: respiration uses glucose and oxygen to produce carbon dioxide and water; a statement about turning CO2 into carbon misses the synthesis of a carbohydrate; and a variant that combines water and oxygen to yield glucose and carbon dioxide inverts the actual inputs and outputs of photosynthesis.