A) photoautotrophic bacteria
B) chemoautotrophic bacteria
C) heterotrophic bacteria
D) None of the above
Correct Answer: B
Solution :
Chemoautotrophs are organisms growing on energy released by the oxidation of reduced inorganic chemical with \[C{{O}_{2}}\] as the prime source of carbon. Photoautotrophic bacteria are those, which grow photosynthetically utilising light energy, inorganic chemicals as a source of electrons and \[C{{O}_{2}}\] as the prime source of carbon. Heterotrophic bacteria (feeding on others) or organotroph cannot grow with \[C{{O}_{2}}\] as the sole source of carbon. The carbon must be supplied in organic form, ie, they grow on organic compounds formed by animals or plants.
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