Name one non-symbiotic nitrogen fixing prokaryote.

Name the best-known symbiotic nitrogen fixing bacterium.

Name two free living nitrogen fixing bacteria.

Name the two types of nitrogen fixers.

Role of Microbes as Biofertilizers : Give two examples of free- living nitrogen fixing bacteria .

Name the enzyme involved in biological nitrogen fixation.

Name the two types of biological nitrogen fixation.

Which of the following alkali metal nitrate on decomposition gives nitrogen dioxide as one of the product ?

Name any one guanotelic organism.

We find that Rhizobium forms nodules on the roots of leguminous plants. Also, Frania another microbe forms nitrogen fixing nodules on the roots of non-leguminous plant Alnus. Can we artificially induce the properly of nitrogen fixation in a plant-leguminous or non-leguminous?

We find that Rhizobium forms nodules on the roots of leguminous plants. Also, Frania another microbe forms nitrogen fixing nodules on the roots of non-leguminous plant Alnus. Is it necessary for a microbe to be in close association with a plant to provide mineral nutrition? Explain with the help of one example.