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

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

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

2. What are the major groups of microorganisms?

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

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