Endomycorrhiza is a type of symbiotic relationship between certain fungi and the roots of most plants. In this association, the fungal hyphae penetrate the root cells, forming structures called arbuscules, which facilitate nutrient exchange. This relationship enhances the plant's ability to absorb water and essential minerals, particularly phosphorus. These fungi are crucial for plant health and growth, as they improve soil structure and increase resistance to pathogens. Endomycorrhizae are found in many ecosystems and play a significant role in promoting biodiversity and soil fertility, benefiting both plants and the environment.