High Quality Content by WIKIPEDIA articles! Ant-fungus mutualism is a symbiosis seen in certain ant and fungal species, where ants actively cultivate fungus much like humans farm crops as a food source. In some species, the ants and fungi are dependent on each other for survival. The leafcutter ant is a well known example of this symbiosis. A mutualism with fungi is also noted in some species of termites in Africa.