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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Botany
Chapter
Mineral Nutrition

NTA Abhyas 2020 · Botany · Mineral Nutrition

What is the role of& Pseudomonas& in the soil?

What is the role of& Pseudomonas& in the soil?

Options

  1. AOxidize ammonia to nitrite
  2. BOxidize ammonia to nitrate
  3. CReduce nitrate to nitrogen
  4. DReduce nitrate to ammonia

Correct answer

C. Reduce nitrate to nitrogen

Step-by-step solution

Ammonia is oxidized to nitrite by the bacteria Nitrosomonas and Nitrococcus. The nitrite is further oxidized to nitrate with the help of the bacterium Nitrobacter. These steps are called nitrification. Nitrate present in the soil is also reduced to nitrogen by the process of denitrification, which is carried by bacteria Pseudomonas and Thiobacillus.
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