Botany - Mineral Nutrition Question with Solution | TestHub

Ammonia is first oxidised to nitrite by the bacteriaNitrosomonasand/orNitrococcus.The nitrite is further oxidised to nitrate with the help of the bacteriumNitrobacter.These steps are called nitrification.

These nitrifying bacteria are chemoautotrophs. The nitrate thus formed is absorbed by plants and is transported to the leaves. In leaves, it is reduced to form ammonia that finally forms the amine group of amino acids. Nitrate present in the soil is also reduced to nitrogen by the process of denitrification. Denitrification is carried by bacteriaPseudomonas andThiobacillus.