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12.Ecosystem
normal
In nitrogen cycle, which of the following plays an important role
A
Rhizopus
B
Nitrobacter
C
Mucor
D
All green algae
Solution
(b)Nitrobacter is a $N_2$ fixing organism, it fixes atmospheric free $N_2$ into soluble salts like nitrites and nitrates. The fixed $N_2$ is absorbed by plants when herbivores feed on these plants, the $N_2$ flows on the carnivores through food chain hence it is important for the $N_2$ cycle.
Standard 12
Biology
