Multiple choice

Which complex biological process is carried out by rhizobium?

  1. Denitrification

  2. Nitrification

  3. Ammonification

  4. Nitrogen fixation

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

Nitrogen fixation is the natural process, in which the atmospheric nitrogen (N2) is converted into ammonia. Rhizobium is a soil bacteria which has the capacity to fix atmospheric nitrogen.