Biology · Oct / Nov 2019 · Paper 12 · Question 30
5090Nutrient cycles
Some bacteria survive best in waterlogged soils where they are able to obtain oxygen for respiration by breaking down nitrates. Nitrogen gas is released as a waste product. To which type of bacteria does this description apply?
- Adecomposing bacteria
- Bdenitrifying bacteria
- Cnitrogen-fixing bacteria
- Droot nodule bacteria
As printed in the paper
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Correct answer: B. denitrifying bacteria
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