In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as

The nodules of some plants (e.g., soyabean) export the fixed nitrogen as ureides. Like amides, these compounds also have a particularly high nitrogen to carbon ratio. Ureides are transported to other parts of the plant via xylem vessels.

Note: Glycine max is the scientific name of soyabean plant.