Multiple choice

Which of the following is a nitrogen fixing bacterium?

  1. Rhozobium

  2. Acetobacter

  3. Mycoplasma

  4. Chlamydia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rhizobium (misspelled as 'Rhozobium' in the option) is a well-known nitrogen-fixing bacterium that forms symbiotic relationships with legume roots. Acetobacter is acetic acid bacteria, Mycoplasma lacks a cell wall and is not a nitrogen fixer, and Chlamydia is an obligate intracellular pathogen - none of these fix nitrogen.

Keep practicing — related questions