Q28 / 180 · NEET 2019 (Odisha) · Botany

Which of the following bacteria reduces nitrate in soil into nitrogen?

  • A
    Nitrobacter
  • B
    Nitrococcus
  • Correct answer
    C
    Thiobacillus
  • D
    Nitrosomonas

Solution

Thiobacillus reduces nitrate in soil into nitrogen. The process is called denitrification. On the other hand, Nitrosomonas and Nitrococcus oxidise ammonia into nitrite. The bacterium, Nitrobacter oxidises nitrite to nitrate. These processes together are known as nitrification.

Hence, the correct answer is option: 'C'.

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