Chemosynthetic bacteria found near sub-marine volcanic vents feed on:

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Chemosynthetic bacteria found near sub-marine volcanic vents feed on:

Hydrogen sulphide (H₂S).
Organic matter.
Deep sea tube worms.
Inorganic carbon.
This question was previously asked in
UPSC Geoscientist – 2020
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Chemosynthetic bacteria found near sub-marine volcanic vents feed on Hydrogen sulphide (H₂S).
Deep-sea hydrothermal vents release various chemicals, including high concentrations of hydrogen sulfide (H₂S). Chemosynthetic bacteria utilize the energy released from the oxidation of H₂S and other reduced inorganic compounds to synthesize organic molecules, forming the base of the food web in these aphotic environments.
Unlike photosynthesis which uses sunlight, chemosynthesis uses chemical energy. The ecosystem around hydrothermal vents is one of the most well-known examples of a chemosynthesis-based ecosystem.

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