Biology · Plant Ecology

How does the mutualistic presence of mycorrhizal fungi primarily benefit trees in a forest ecosystem?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1By synthesizing toxic chemical compounds to deter all herbivorous insects
2By increasing the effective surface absorption area of the root system for water and nutrients✓
3By acting as primary decomposers of thick surface leaf litter
4By directly fixing elemental atmospheric nitrogen inside root nodules

Correct answer

By increasing the effective surface absorption area of the root system for water and nutrients

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