What is nitrification? Name any one bacterium which helps in nitrification

CBSE Class 9 CBSE Class 9 Science
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  1. Why are root nodules useful for leguminous plants?
  2. What is nitrification? Name any one bacterium which helps in nitrification.
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  1. Root nodules are special structures present associated with the roots of plants where nitrogen-fixing bacteria are present. These bacteria convert inert aerial nitrogen into nitrates for the use of plants. The process of biofixation of nitrogen by some nitrogen-fixing bacteria like Rhizobium, etc., is called nitrogen-fixation.
  2. Nitrification is the process of conversion of ammonia into nitrates. This process is carried out by Nitrosomonas and Nitrobacter, which are nitrifying bacteria. Nitrosomonas converts ammonia (NH4) into nitrites (NO2–) and Nitrobacter converts nitrites into nitrates (NO3).