Plants and mycorrhizal fungi have a mutualistic relationship, where both organisms benefit from the association. The fungi attach to the plant roots, forming a network of mycelium that extends the plant's root system. In return, the fungi receive carbohydrates and other nutrients from the plant. This symbiotic relationship enhances the plant's ability to absorb water and mineral nutrients from the soil, while the fungi receive vital sugars and amino acids from the plant. This exchange of resources is essential for the growth and survival of both organisms in their respective environments.