What type of ecological relationship exists between mycorrhizal fungi and the roots of boreal conifers in Swedish forests?
Answer and explanation
Correct answer: C. Mutualism
- Step 1: Mycorrhizae supply tree roots with soil water and dissolved minerals (especially phosphorus). Step 2. The tree supplies the fungus with photosynthetic carbohydrates; because both partners benefit, it is mutualism. Answer: Mutualism. Why not the others: Parasitism benefits one at the cost of the other; commensalism benefits one without affecting the other.
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