In photosynthesis, what do plants use sunlight to do?

In photosynthesis, what do plants use sunlight to do?

• A. Plants convert sunlight into oxygen directly
• B. Plants don't eat sunlight; they use sunlight to make sugars
• C. Plants absorb sunlight to stay warm for energy
• D. Plants eat sunlight and use it for growth

Answer: (B)

Sunlight provides the energy that drives photosynthesis, allowing plants to synthesize sugars from carbon dioxide and water. Chlorophyll absorbs light and powers the light-dependent reactions to create ATP and NADPH, which fuel the Calvin cycle to fix CO2 into glucose. Oxygen is released as a byproduct of splitting water during the light reactions, not directly from sunlight itself. So the best description is that sunlight is used to make sugars, not to directly produce oxygen, warm the plant, or be “eaten.”

Sunlight provides the energy that drives photosynthesis, allowing plants to synthesize sugars from carbon dioxide and water. Chlorophyll absorbs light and powers the light-dependent reactions to create ATP and NADPH, which fuel the Calvin cycle to fix CO2 into glucose. Oxygen is released as a byproduct of splitting water during the light reactions, not directly from sunlight itself. So the best description is that sunlight is used to make sugars, not to directly produce oxygen, warm the plant, or be “eaten.”