Which of the following describes the relationship between a grass and mycorrhizae, an underground fungus?

A) commensalism
B) mutualism
C) herbivory
D) parasitism

Mycorrhizae

Symbiotic relationships between the roots of plants and fungi, where the fungus assists in the absorption of water and nutrients from the soil in exchange for carbohydrates produced by the plant.

Mutualism

Mutualism describes a relationship between species in which both species benefit.