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

2. What are the major groups of microorganisms?

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

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