The Difference Between Ectomycorrhizal Fungi and Endomycorrhizal Fungi Has to Do

The difference between ectomycorrhizal fungi and endomycorrhizal fungi has to do with

A) whether the fungal hyphae are connected to the plant above ground or below ground.
B) whether the fungal hyphae of the fungi penetrate the root cells of the plants involved.
C) whether the fungal hyphae provide the plant with minerals or sugars.
D) whether the fungal hyphae are specific to a single plant or generalized to many plants.