Photosynthesis: Process, Equation, Facts and Importance
Photosynthesis
The remarkable process through which green plants use sunlight, water and carbon dioxide to make food and release oxygen.
Explore ↓What is Photosynthesis?
One of the most important biological processes on Earth.
Photosynthesis is the process by which green plants, algae and some microorganisms convert light energy into chemical energy.
Plants use energy from sunlight to convert carbon dioxide and water into sugars. Oxygen is released during the light-dependent reactions.
How Does It Work?
Photosynthesis involves several important steps.
Sunlight
Chlorophyll captures energy from sunlight.
Water
Roots absorb water from the soil.
Carbon Dioxide
CO₂ enters leaves through stomata.
Food + Oxygen
Plants produce sugars and release oxygen.
Photosynthesis in Action
Watch sunlight, water and carbon dioxide move toward the leaf.
Inside the Chloroplast 🔬
Photosynthesis mainly occurs inside chloroplasts of plant cells.
Chloroplasts contain the green pigment chlorophyll. Light-dependent reactions occur in the thylakoid membranes, while the Calvin cycle occurs in the stroma.
Interesting Facts
Discover some fascinating facts about photosynthesis.
Solar Energy
Photosynthesis converts light energy into chemical energy stored in organic molecules.
Carbon Cycle
Photosynthesis plays an important role in Earth's global carbon cycle.
Oxygen
The oxygen released during photosynthesis comes from water molecules split during the light reactions.
Chlorophyll
Chlorophyll absorbs light energy and gives most photosynthetic plant tissues their green appearance.
Food Webs
Photosynthetic organisms are primary producers that support many food webs.
Two Major Stages
Photosynthesis includes light-dependent reactions and the Calvin cycle.
Factors Affecting Photosynthesis
Several environmental conditions can influence the rate of photosynthesis.
☀️ Light Intensity
Increasing light can increase the rate until another factor becomes limiting.
🌬️ Carbon Dioxide
The availability of CO₂ can influence the rate of carbon fixation.
💧 Water
Water is an essential raw material, and severe water shortage can reduce photosynthesis.
Why Is Photosynthesis Important?
Photosynthesis connects sunlight, plants, food and the atmosphere.
🍎 Food
Photosynthetic organisms produce organic compounds that form the foundation of many food chains.
🌬️ Atmosphere
Photosynthesis releases oxygen and takes up carbon dioxide during carbon fixation.
🌍 Ecosystems
Energy captured by photosynthetic organisms supports ecosystems around the world.