Refer to the figures.
The two figures represent the results of studies on a mutualism between the plant Medicago and its partner, a mycorrhizal fungus. The top figure shows the percentage of carbohydrate transferred from the plant to the fungus, depending on the amount of phosphorus the fungus supplies to the plant. The bottom figure shows the amount of fungal phosphorus incorporated by plant roots, depending on the amount of carbohydrate supplied to the fungus. Given the information in these two figures, does the mutualism appear to be under the control of the plant or the fungus, or do both partners exercise some control?

Question

Refer to the figures.
   The two figures represent the results of studies on a mutualism between the plant Medicago and its partner, a mycorrhizal fungus. The top figure shows the percentage of carbohydrate transferred from the plant to the fungus, depending on the amount of phosphorus the fungus supplies to the plant. The bottom figure shows the amount of fungal phosphorus incorporated by plant roots, depending on the amount of carbohydrate supplied to the fungus. Given the information in these two figures, does the mutualism appear to be under the control of the plant or the fungus, or do both partners exercise some control?

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The Answer of Refer to the figures.
   The two figures represent the results of studies on a mutualism between the plant Medicago and its partner, a mycorrhizal fungus. The top figure shows the percentage of carbohydrate transferred from the plant to the fungus, depending on the amount of phosphorus the fungus supplies to the plant. The bottom figure shows the amount of fungal phosphorus incorporated by plant roots, depending on the amount of carbohydrate supplied to the fungus. Given the information in these two figures, does the mutualism appear to be under the control of the plant or the fungus, or do both partners exercise some control?

Refer to the Figures