Test Index

JAMB Biology 2016 Paper

Question : 33

Total: 50

Solution:

Concept:

Denitrification returns nitrogen from soil nitrates to the atmosphere.

Explanation:

Nitrates (

\mathrm{NO}_3^-

) in the soil are converted into atmospheric nitrogen (

\mathrm{N}_2

) by denitrifying bacteria.

This process is called denitrification.

Denitrifying bacteria carry out this conversion under anaerobic conditions.

Answer:

D. denitrifying bacteria

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