Most Denitrification is Due to _____

Question

Most denitrification is due to _____.
A)Rhizobium
B)Azotobacter
C)Pseudomonas
D)Nitrosomonas

Accepted Answer

Denitrification is the process by which nitrate (NO3-) is reduced to nitrogen gas (N2) by bacteria. Among the bacteria that perform denitrification, Pseudomonas is considered to be the most efficient. Rhizobium and Azotobacter are nitrogen-fixing bacteria that convert atmospheric nitrogen to ammonia, while Nitrosomonas is involved in the first step of nitrification, the conversion of ammonia to nitrite.