JAMB Biology 2021 Objective — Question 13
Question 13 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2021 Objective paper, with the correct answer and a full explanation.
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13. The bacteria that cannot convert atmospheric nitrogen to soil nitrate are called (a) denitrifying bacteria (b) nitrogen-fixing bacteria (c) putrefying bacteria (d) aerobic bacteria
- A. denitrifying bacteria
- B. nitrogen-fixing bacteriaCorrect
- C. putrefying bacteria
- D. aerobic bacteria
Explanation
Nitrogen-fixing bacteria are the ones that aid nitrogen fixation, i.e. convert atmospheric nitrogen to soil nitrate; other bacteria types cannot perform this conversion. These bacteria live mutualistically in the root nodules of leguminous plants.
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