| (i) Conversion of organic nitrogen to \[N{{H}_{4}}\]by soil microbes is called ammonification. |
| (ii) Ammonia is first oxidised to nitrite by Nitrosomonas and Nitrosococcus. |
| (iii) The nitrite is further oxidised to nitrate with the help of the bacterium Thiobacillus, |
| (iv) In leaves, nitrate is reduced to form ammonia that finally forms the \[-N{{H}_{2}}\] group of amino acids. |
| (v) Nitrosomonas, Nitrosococcus and Nitrobacter are chemoautotrophs. |
A) (i), (ii) and (iii)
B) (ii), (iii), (iv) and (v)
C) (i), (ii) and (iv)
D) (i), (ii), (iv) and (v)
Correct Answer: D
Solution :
[d] The nitrite is further oxidised to nitrate with the help of the bacterium Nitrobacter.
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