What does light provide in the process of photosynthesis?

What does light provide in the process of photosynthesis?

• A. Energy
• B. Matter
• C. Water
• D. Chlorophyll

Answer: (A)

Light provides the energy that powers photosynthesis. The energy from absorbed light drives the light-dependent reactions, where water is split, oxygen is released, and energy carriers (ATP and NADPH) are produced. Those energy-rich molecules then fuel the Calvin cycle, enabling carbon dioxide to be fixed into sugars. Light itself isn’t matter, so it doesn’t supply water or carbon; it simply supplies the energy. Chlorophyll is the pigment that captures that light energy, not something light provides.

Light provides the energy that powers photosynthesis. The energy from absorbed light drives the light-dependent reactions, where water is split, oxygen is released, and energy carriers (ATP and NADPH) are produced. Those energy-rich molecules then fuel the Calvin cycle, enabling carbon dioxide to be fixed into sugars. Light itself isn’t matter, so it doesn’t supply water or carbon; it simply supplies the energy. Chlorophyll is the pigment that captures that light energy, not something light provides.