Question

........... bacterium is found in the roots of leguminous plants.

Answer 1

Rhizobium bacterium is found in the roots of leguminous plants. It forms a mutual association with the roots of the leguminous plants. This bacterium forms nodules in the cortical cells of the roots. They perform nitrogen fixation with the help of nitrogenase enzyme. They are commonly used as biofertilizers because their activity of nitrogen fixation causes an increase in the yield of the legume plants.