Name the bacteria found in the root nodules of leguminous plants and state the association of the bacteria with the leguminous plants

The root nodules of leguminous plants houses nitrogen-fixing bacteria called Rhizobia. Rhizobia has a symbiotic relationship with leguminous plants that allows both to benefit from each other.

By binding to hydrogen, the Rhizobia bacterium is able to  convert or fix nitrogen gas into ammonia , a form that the plant can use. Likewise, the legume plant provides the rhizobia bacterium with carbohydrate which the rhizobia depends on for energy. It is important to note that the carbohydrate sent to the nodules for the rhizobia is also what is used as a source of hydrogen to help the bacterium convert nitrogen to ammonia.

The name of the bacteria that could be seen in the root of leguminous plants is Rhizobium. And the association is symbiotic association

They are like nitrogen replenishers of the soil, A plot of land being cultivated for a time might lose its fertility, And as a part of it there could be a decrease of nitrogen content in the soil. And this could affect the crops grown in the field as nitrogen is needed for plant growth. Thus by planting leguminous plants in this field which we have taken as an example, will bring in the rhizobium bacteria which will be present in the root nodules and these bacteria via symbiotic relationship will fix atmospheric nitrogen into the soil which brings back the fertility of the land.

It would be 3 though I think the NAHDA is a typo likely means NADH

Explanation: