Leaf cutter ants cultivate fungus the ants keep conditions optimal for fungus growth and carry leaf fragments for the fungus to grow on then the ants feed on pieces if the fungus what kind of relationship exists between the fungus and the ants

The relationship between leaf cutter ants and the fungus they cultivate can be described as symbiotic mutualism. Mutualism is a type of relationship where both species benefit from each other.

In this case, the ants provide a constant supply of fresh plant material (leaf fragments) for the fungus to grow on. They also create and maintain an optimal environment for the fungus by removing debris, controlling humidity, and defending the cultivation area against pathogens and other organisms that could harm the fungus.

In return, the fungus provides the ants with a nutrient-rich food source. The ants feed on the specialized structures or "gongylidia" that grow on the fungus. These structures are rich in carbohydrates and proteins, which serve as the ants' primary source of nutrition.

Overall, the ants rely completely on the fungus for their sustenance, and the fungus depends on the ants to provide it with suitable growing conditions. This interdependence makes their relationship highly cooperative and mutually beneficial.