Long TextExercise 81 of 83

Beneath the surface of almost every forest floor lies an invisible network of extraordinary complexity. Mycorrhizal fungi - organisms that form symbiotic partnerships with plant roots - extend thread-like filaments called hyphae through the soil, connecting individual trees to one another in a vast underground web.…

• What does the writer say about the relationship between fungi and plant roots?
• How does the mycorrhizal partnership benefit both the fungus and the tree?