The term for a partnership between a fungus and a plant root is called mycorrhiza. This mutualistic association significantly benefits both organisms: the fungus enhances the plant's ability to absorb water and nutrients from the soil, while the plant provides the fungus with carbohydrates produced through photosynthesis. This relationship plays a critical role in plant health, growth, and ecosystem stability. Mycorrhizae are essential for nutrient cycling and are found in a wide variety of plants, supporting biodiversity.