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JAMB Biology 2014 Question 34

Question 34

Nutrient Cycling

Which of the following is a nitrogen-fixing blue-green algae soil?

  1. A.Rhizobium.
  2. B.Nitrosomonas.
  3. C.Clostridium.
  4. D.Anabaena.
Show the answer and explanation

Answer: D (Anabaena.)

Explanation

Anabaena is a blue-green alga that fixes nitrogen. Rhizobium and Clostridium are nitrogen-fixing bacteria, and Nitrosomonas is a nitrifying bacterium.