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WAEC Agricultural Science 2020 Question 17

Question 17

Soil Fertility and Plant Nutrition

The following bacteria are important in the nitrogen cycle except

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

Answer: A (Bacillus.)

Explanation

Nitrosomonas and Nitrobacter nitrify and Rhizobium fixes nitrogen; Bacillus is not one of the named nitrogen-cycle bacteria.