Answers to Analyzing Data 15.1 Questions

1.

2. The results in the figure show that the fungus transferred more phosphorus to plant roots that had greater access to sucrose.

3. Both partners play a role. As shown in Figure 15.13, the plant transfers more carbohydrates to fungi that have access to phosphorus. Similarly, as shown in the figure here, the fungus transfers more phosphorus to plants that have greater access to carbohydrates.