{"id":86626,"date":"2025-06-01T04:17:20","date_gmt":"2025-06-01T04:17:20","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86626"},"modified":"2025-06-01T04:17:20","modified_gmt":"2025-06-01T04:17:20","slug":"chemoautotrophs-are-those-organisms-which-obtain-energy","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/chemoautotrophs-are-those-organisms-which-obtain-energy\/","title":{"rendered":"Chemoautotrophs are those organisms which obtain energy:"},"content":{"rendered":"

Chemoautotrophs are those organisms which obtain energy:<\/p>\n

[amp_mcq option1=”from the oxidation of organic electron donors in the presence of light.” option2=”solely from the oxidation of inorganic electron donors in the presence of light.” option3=”from the oxidation of organic electron donors in the absence of light.” option4=”solely from the oxidation of inorganic electron donors in the absence of light.” correct=”option4″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC Geoscientist – 2020<\/div>\n<\/div>\n
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\nChemoautotrophs are organisms that obtain energy from chemical reactions, specifically the oxidation of inorganic substances. They do not rely on light for energy.
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\nChemoautotrophs are distinct from photoautotrophs (which use light energy) and obtain energy from inorganic chemical bonds without requiring light.
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\nExamples of chemoautotrophs include certain bacteria and archaea found in environments like deep-sea hydrothermal vents, sulfur-rich springs, or soil, where they oxidize compounds like hydrogen sulfide, methane, or ferrous iron. They use this energy to synthesize organic compounds from carbon dioxide.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Chemoautotrophs are those organisms which obtain energy: [amp_mcq option1=”from the oxidation of organic electron donors in the presence of light.” option2=”solely from the oxidation of inorganic electron donors in the presence of light.” option3=”from the oxidation of organic electron donors in the absence of light.” option4=”solely from the oxidation of inorganic electron donors in the … <\/p>\n

Detailed SolutionChemoautotrophs are those organisms which obtain energy:<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1091],"tags":[1288,1117,1115],"class_list":["post-86626","post","type-post","status-publish","format-standard","hentry","category-upsc-geoscientist","tag-1288","tag-biology","tag-miscellaneous","no-featured-image-padding"],"yoast_head":"\nChemoautotrophs are those organisms which obtain energy:<\/title>\n<meta name=\"description\" content=\"Chemoautotrophs are organisms that obtain energy from chemical reactions, specifically the oxidation of inorganic substances. They do not rely on light for energy. 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