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WAEC Agricultural Science 2004 Question 14

Question 14

Soil Fertility and Plant Nutrition

In the nitrogen cycle, nitrite is oxidized to nitrate by

  1. A.nitrobacter
  2. B.nitrosomonas
  3. C.azotobacter
  4. D.rhizobium
Show the answer and explanation

Answer: A (nitrobacter)

Explanation

Nitrobacter changes nitrite to nitrate; Nitrosomonas changes ammonium to nitrite.