Certain species of which one of the following organisms are well known as cultivators of fungi?

Question

Accepted Answer

The ant–fungus mutualism is a symbiosis seen between certain ant and fungal species, in which ants actively cultivate fungus much like humans farm crops as a food source. Leafcutter ants use leaves as their fertilizer to grow their crop: fungus. They cultivate their fungal gardens by:  Providing them with freshly cut leaves, Protecting them from pests and molds, Clearing them of decayed material and garbage.  In return, the fungus acts as a food source for the ants' larvae.