English: The diagram demonstrates the mutualistic relationship between plants and their mycorrhiza, which is a fungus that helps plants take in key nutrients. The left side of this diagram shows the plant pathway of this relationship, where the host plant transfers between 4% to 20% of its photosynthetically fixed carbon, which is labeled “G” in this image because it represents glucose, to the mycorrhiza. On the right side of this diagram, the arbuscular mycorrhiza pathway, which branches off from the plant root, which is the brown cylinder-like figure in the image, provides the plant with nutrients, including, most importantly, phosphate and nitrogen.