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Answer: 3. Mutualism

Mycorrhizae are associations between fungi and roots of higher plants, and both partners benefit.

The fungus absorbs phosphorus and water from soil and passes them to the plant; the plant gives the fungus carbohydrates. A relationship in which both gain is mutualism. Amensalism harms one partner without effect on the other; antibiosis and fungistasis are about growth-inhibiting chemicals.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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