Multiple choice

The nitrogen fixing bacteria living in the swellings on the roots of pulses is _________________.

  1. nitrobacteria

  2. acetobacter

  3. nitrosomonas

  4. rhizobium

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rhizobium is a nitrogen-fixing bacteria that forms symbiotic nodules on the roots of leguminous plants (pulses). Nitrobacteria and nitrosomonas are involved in nitrification but not nitrogen fixation, while acetobacter is acetic acid bacteria.