Nitrogenase enzyme is found in $Nostoc$ in the cell of:

Legume plants are important because they

The bacteria found in the root nodules of the family $Leguminosae$ are:

What type of bacteria is $Rhizobium$?

We find that $Rhizobium$ forms nodules on the roots of leguminous plants. Also,$Frankia$,another microbe,forms nitrogen-fixing nodules on the roots of the 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.

What is the function of leghemoglobin?