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GCE Biology 1989 Question 48

Question 48

Nutrient Cycling

Which of the following fixes atmospheric nitrogen?

  1. A.Rhizobium
  2. B.Nitrosomonas
  3. C.Nitrobacter
  4. D.Putrefying bacteria
  5. E.Denitrifying bacteria
Show the answer and explanation

Answer: A (Rhizobium)

Explanation

Rhizobium in legume root nodules turns nitrogen gas into nitrogen compounds.