Chemoautotrophs are distinct from photoautotrophs (which use light energy) and obtain energy from inorganic chemical bonds without requiring light.
Chemoautotrophs are those organisms which obtain energy:
Asked in UPSC Geoscientist 2020 · Topic: Taxonomy (Chemotaxonomy and Cytotaxonomy)
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Answer: D. solely from the oxidation of inorganic electron donors in the absence of light.
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