Question

What type of organism carries out nitrogen fixation?

• A. Bacteria
• B. Protists
• C. Fungi
• D. All of these

Answer 1

The correct option is A

Bacteria

Biological nitrogen fixation is carried out by some bacteria that can convert N₂ into ammonia by the process termed nitrogen fixation. These bacteria are either free-living or form symbiotic associations with plants e.g rhizobium - the symbiotic bacteria live in the root nodules of leguminous plants