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The figure depicts the outline of a large fairy ring that has appeared overnight in an open meadow, as viewed from above. The fairy ring represents the furthest advance of this mycelium through the soil. Locations A-D are all 0.5 meters below the soil surface.

If the fungus that produced the fairy ring can also produce arbuscules, then which of the following is most likely to be buried at location "C"?

Question

Use the information to answer the following question.
The figure depicts the outline of a large fairy ring that has appeared overnight in an open meadow, as viewed from above. The fairy ring represents the furthest advance of this mycelium through the soil. Locations A-D are all 0.5 meters below the soil surface.

If the fungus that produced the fairy ring can also produce arbuscules, then which of the following is most likely to be buried at location "C"?

Quizplus · Accepted Answer

The fairy ring represents the furthest advancement of the mycelium of a fungus through the soil. If the fungus can produce arbuscules, it is likely an ectomycorrhizal fungus. These fungi form mutualistic associations with tree roots, so it is most likely that a tree stump would be buried at location "C," providing a nutrient source for the fungus to colonize and form the fairy ring. Deceased animals, fire pits, and cement-capped wells are not likely to be associated with ectomycorrhizal fungi.

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