Biology

False.

Not all plants have nitrogen-fixing nodules on their roots.

Nitrogen-fixing nodules are typically found on the roots of certain plants called legumes (such as peas, beans, and clover). These plants have a symbiotic relationship with nitrogen-fixing bacteria (such as Rhizobium) that live in the nodules on their roots. The bacteria convert atmospheric nitrogen (N₂) into a form (ammonia) that the pl...