Biologymedium · Past Paper
Which of the following is a nitrogen-fixing bacteria found in the root nodules of leguminous plants?
AAzotobacter
BRhizobium
CLactobacillus
DSpirogyra
✓ Correct Answer: B — Rhizobium
Rhizobium forms a symbiotic relationship with legumes, converting atmospheric nitrogen into a form plants can use.
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