Biological Classification And System Of Classification Question 100
Question: Nitrifying bacteria, Nitrosomonas and Nitrobactor
[AFMC 1981, 84; CPMT 1983, 86; BHU 1985]
Options:
A) Convert (oxidise) ammonia or ammonium compounds into nitrates
B) Convert nitrate into nitrogen
C) Convert nitrogen into nitrates
D) Convert carbon dioxide into carbohydrates
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Answer:
Correct Answer: A
Solution:
Nitrification is the phenomena of conversion of ammonium nitrogen to nitrate nitrogen.
It is performed in two steps- nitrite formation and nitrate formation.
In the first step, ammonium ions are oxidized to nitrites by bacteria Nitrosomonas.
In the second step, nitrites are changed to nitrates by Nitrobacter. So this cycle is carried out by these nitrifying bacterias.
BETA
