Relationship between nitrogen-fixing bacteria and roots of leguminous plants
The answer is: symbiotic
The relationship between nitrogen-fixing bacteria and the roots of leguminous plants is symbiotic.
Nitrogen-fixing bacteria are an important part of the nitrogen cycle, as they convert nitrogen in the soil into ammonia, and allow it to be absorbed by plants.
In turn, leguminous plants take action by forming special nodules in their roots, which are home to nitrogen-fixing bacteria.
The fixed nitrogen is converted to ammonia, and the plant uses this nitrogen fixed by the bacteria for its own development and nutrition.
Therefore, this relationship between nitrogen-fixing bacteria and the roots of leguminous plants is very violent and benefits both the plant and the bacteria, helping them to continue to live in a sustainable environment.