Question

How is the symbiotic association between rhizobium and leguminous beneficial

Answer 1

Answer:

Many legumes have root nodules that provide a home for symbiotic nitrogen-fixing bacteria called rhizobia. ... The rhizobia convert nitrogen gas from the atmosphere into ammonia, which is used in the formation of amino acids and nucleotides. The association is symbiotic in that both the plant and rhizobia beneficial.

The relationship between legumes and Rhizobia sp. is a form of symbiosis called mutualism, where both organisms benefit from each-other - the plant gets usable nitrogen from the ammonium and the bacteria receive organic acids from the plant to use as a food source.