Name the organism involved in symbiotic nitrogen fixation. What are the components needed for this purpose ? Explain role.

What is nitrogen fixation?

Non-symbiotic nitrogen fixation takes place by

Name the enzyme involved in biological nitrogen fixation. What are the two mineral elements needed for the activity of enzymes.

Name one symbiotic nitrogen fixing bacteria

Element involved in nitrogen -fixation is

Name the best known symbiotic nitrogen fixing bacterium.

What is nonbiological nitrogen fixation ?

Name one non-symbiotic nitrogen fixing prokaryote .