N-fixing — task. Science CBSE, Class 8 HW Assignments.

1. Name the microorganisms which can fix atmospheric nitrogen in the soil.

Rhizobium, Clostridium and Vibrio cholerae.
Rhizobium, Plasmodium and Azotobacter.
Rhizobium, Clostridium and Azotobacter.
Lactobacillus, Clostridium and Azotobacter.

2. What are the major groups of microorganisms?

Bacteria, Virus, Protozoa, Algae
Bacteria, Virus, Protozoa, Mosquito
Nodules, Virus, Protozoa, Algae
Bacteria, Virus, Worms, Algae

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