Multiple choice

Which of these is a nitrogen-fixing bacteria?

  1. Streptococcus

  2. Lactobacillus

  3. Rhizobia

  4. Firmicutes

  5. Staphylococcus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rhizobia are soil bacteria that fix nitrogen (diazotrophs) after becoming established inside the root nodules of legumes.

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