Question

(b) Name the bacteria that converts (i) ammonium
compounds to nitrites (ii) nitrites to nitrates.
(c) State how the nitrates in the soil get converted
to nitrogen of the atmosphere.
(d) Role of plants and animals in the formation of
ammonium compounds.​

Answer 1

Answer:

Explanation:

(i)Nitrosomonas, Nitrosospira, Nitrosococcus, and Nitrosolobus

(ii)Nitrobacter, Nitrospina, and Nitrococcus

(iii)Denitrification completes the nitrogen cycle by converting nitrate (NO3-) back to gaseous nitrogen (N2). Denitrifying bacteria are the agents of this process. These bacteria use nitrate instead of oxygen when obtaining energy, releasing nitrogen gas to the atmosphere.Example of denitrifying bacteria are peudomonas,Thiobacillus

(iv)Organisms like plants, fungi and certain bacteria that cannot fix nitrogen gas (N2) depend on the ability to assimilate nitrate or ammonia for their needs. Other organisms, like animals, depend entirely on organic nitrogen from their food. Ammonium ions are absorbed by the plant via ammonia transporters.