Biological Classification And System Of Classification Question 129
Question: The bacteria which convert $ NO_3\to $ Free $ N_2 $ are called as
[CPMT 1994, 2003; MP PMT 1996; MHCET 2003]
Options:
A) Nitrifying bacteria
B) Ammonifying bacteria
C) Denitrifying bacteria
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
Denitrification is the biological conversion of nitrate to nitrogen gas, nitric oxide or nitrous oxide.
These compounds are gaseous compounds and are not readily available for microbial growth; therefore they are typically released to the atmosphere.
Denitrifiers belong to several genera including Pseudomonas,Bacillus, Spirillum, Hyphomicrobium, Propionobacterium, Cornebacterium, Thiobacillus, and Alcaligenes.
Biological denitrification is an anaerobic respiration reaction in which nitrate is reduced.
Denitrifying bacteria are aerobic autotrophs or heterotrophs that can switch to anaerobic growth when nitrate is used as an electron acceptor.
BETA
