Question

Which of the following is Iron bacterium?

• A. Beggiotoa
• B. Geobacillus
• C. Thiobacillus
• D. None of these

Answer 1

Answer: (C)

Thiobacillus

Iron-oxidizing bacteria in surface water. Iron-oxidizing bacteria are chemotrophic bacteria that derive the energy they need to live and multiply by oxidizing dissolved ferrous iron. Iron-oxidizing bacteria colonize the transition zone where de-oxygenated water from an anaerobic environment flows into an aerobic environment. Iron-oxidizing bacteria use that oxygen to convert the soluble ferrous iron back into an insoluble reddish precipitate of ferric iron. Iron bacterium is Thiobacillus.

So the correct answer is 'Thiobacillus'.