Denitrification is carried by bacteria

Consider the following statements I. sulphur is present in two amino acids cysteine and valine II. Lower level of N,K,S and Mo causes inhibition of cell division. III. Microbe that fix nitrogen in the roots of non-leguminous plants alums in frankia IV. Denitrification is carried by bacteria Nitrosomonas and nitrobacter Select the correct pair of statements.

Consideer the following statements I. sulphur is present in two amino acids cysteine and valine II. Lower level of N,K,S and Mo causes inhibition of cell division. III. Microbe that fix nitrogen in the roots of non-leguminous plants alums in frankia IV. Denitrification is carried by bacteria Nitrosomonas and nitrobacter Select the correct pair of statements.

Denitrification is carried out by

Denitrification is done by:

How do some bacteria carry out nitrification? What are such bacteria called?