Ecologically Speaking, Most Soil Fungi are to Plant Roots As

Question

Ecologically speaking, most soil fungi are to plant roots as:
A) viruses are to animals.
B) smut fungi are to corn.
C) mosquitoes are to mammals.
D) intestinal bacteria are to humans.

Accepted Answer

Intestinal bacteria are important for the health and functioning of the human digestive system, similarly, soil fungi are important for the health and functioning of plant roots.