Photosynthesis takes place on land and in shallow water where sunlight can reach seaweeds.
Chemosynthesis is the process by which food (glucose) is made by bacteria using chemicals as the energy source, rather than sunlight.
Pure sulfur and sulfur compounds are produced as by-products.
In the diagram mussels and tubeworms are using the hydrogen sulfide released from a hydrothermal vent.
OR Chemoautotrophic bacteria uses energy produced by oxidizing or reducing chemical substances.
The energy released from oxidation or reduction is used to synthesize organic compounds. This chemosynthesis does not and this is how it differs from photosynthesis.The chemical equation given here for chemosynthesis is just one of a number of possibilities.Te Ara - The Encyclopedia of New Zealand This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law.The difference between the two is that chemosynthesis uses chemicals instead of light energy like photosynthesis.Bacteria and eukaryotes(plants), both are autotrophes but the major difference is that bacteria show chemosynthesis while plants show photosynthesis.Chemosynthesis is the process by which certain bacteria convert carbon dioxide and water into carbohydrates using inorganic compounds for energy.Photosynthesis uses carbon dioxide, water and light to make oxygen and glucose. Some autotrophic bacteria that exist in dark regions of the earth and ocean obtain energy from a process called chemosynthesis rather than photosynthesis.The vast majority of organisms that are designated as producers (generally plants) derive their energy from the sun through photosynthesis.Some exceptions to this are called extremophiles, which gain energy through chemosynthesis (such as bacteria around deep ocean vents).It is the responsibility of the user of any material to obtain clearance from the copyright holder. Photosynthesis uses sunlight and chemosynthesis uses inorganic compounds.