d) Oxidation of carbon to CO2.
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy as sugar.
- Photosynthesis is the process of preparing food in the presence of sunlight and chlorophyll.
- In this process, the plant uses water from the soil, carbon dioxide from the air, and energy from sunlight to prepare glucose.
Carbon dioxide + Water + light energy → Glucose + Oxygen
- During the initial phase of photosynthesis, light energy is harvested to produce ATP and NADPH where water is oxidized to provide electrons and protons.
- After the formation of ATP and NADPH, carbon dioxide is reduced to carbohydrates (glucose)
- The reduction of carbon dioxide to carbohydrates doesn’t directly depend on the presence of sunlight but on the supply of ATP and NADPH that were formed during the initial phase.