"Symbiotic organisms" refers to living things that rely on each other and have a mutually beneficial relationship. They work together and help each other survive and thrive. Full definition
It can not digest grass and needs a whole mess of symbiotic organisms in its overgrown esophagus to digest it. (discovermagazine.com)
The reaction is slightly forward, enough to power the methanogens as well as symbiotic organisms that produce the H2. (planet3.org)
They found the same pattern occurring across continents and various ocean locations — as well as across various levels of productivity and diversity — all of which showed shifts in the way symbiotic organisms interacted. (sciencedaily.com)