4.Which of the following is a denitrifying bacteria?
4.Which of the following is a denitrifying bacteria?
The correct option is C Pseudomonas
The process of conversion of free atmospheric nitrogen into its compound is known as nitrogen fixation. This process occurs as plants cannot absorb nitrogen as such. The nitrogen compounds are first converted into nitrites and nitrates which are then consumed by plants to produce proteins.
The conversion of ammonia to nitrite (NO2-) by Nitrosomonas bacteria and then to nitrate (NO3-) with the help of Nitrobacter bacteria and this process is called nitrification. The conversion of nitrates (NO3-) to gaseous nitrogen with the help of Pseudomonas bacteria and this process is called denitrification.
A) Nitrobacter helps in nitrification
B)Nitrosomonas helps in nitrification
C) Pseudomonas helps in denitrification
D) Rhizobium helps in nitrification.
So, the correct option is C.
Pseudomonas
The process of conversion of free atmospheric nitrogen into its compound is known as nitrogen fixation. This process occurs as plants cannot absorb nitrogen as such. The nitrogen compounds are first converted into nitrites and nitrates which are then consumed by plants to produce proteins.
The conversion of ammonia to nitrite (NO2-) by Nitrosomonas bacteria and then to nitrate (NO3-) with the help of Nitrobacter bacteria and this process is called nitrification. The conversion of nitrates (NO3-) to gaseous nitrogen with the help of Pseudomonas bacteria and this process is called denitrification.
A) Nitrobacter helps in nitrification
B)Nitrosomonas helps in nitrification
C) Pseudomonas helps in denitrification
D) Rhizobium helps in nitrification.
So, the correct option is C.
