Question

Assertion: Ammonia is converted into nitrate by soil bacteria like Nitrosomonas and Nitrobacter
Reason: Denitrification is carried by bacteria Pseudomonas and Azotobacter.
A. If both assertio and reason are true and reason is the correct explanation of assertion
B. if both assertion and reason are true but reason is not the correct explanation of assertion
C. if assertion is true but reason is false
D. if both assertion and reason are false

Answer 1

Correct Answer - C
Ammonia is first oxidised to nitrite by the bacteria Nitrosomonas and/or Nitrosococuccus. The nitriate is further oxidised to nitrate with the help of the bacteria Nitrobacter, and/or Nitrocysits. These steps are called nitrification. These nitrifying bacteria are chemoautotrophs.