Chemosynthesis
- The amount of energy available in chemosynthesis is much.
- There is no gain of energy from outside the planet.
- No light is involved in this process.
- Exothermic reactions.
- Energy required for the process is obtained by the oxidation of certain inorganic substances available in the environment
Photosynthesis
- The amount of energy in photosynthesis is much more than in chemosynthesis.
- There is distinct gain of energy from outside the planet.
- There is distinct gain of energy from outside the planet.
- It takes place in the presence of light.
- Endothermic reactions.
- Solar energy trapped by the pigments is used in the process.