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Which of the following bacteria get carbon from CO₂ but derive energy from oxidation of inorganic substances during bacterial nutrition?

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Rhodospirillum and Rhodopseudomonas

Chromatium and Chlorobium

Bacillus and Xanthomonas

Nitrobacter and Beggiatoa

answer is D.

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Detailed Solution

Chemoautotrophs are organisms that obtain energy from chemical reactions and use this energy to synthesize organic molecules from inorganic carbon sources. Examples are Nitrobacter and Beggiatoa.

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