Lichenized fungi are a unique group of fungi that form a symbiotic relationship with algae or cyanobacteria. This partnership allows them to thrive in harsh environments, where they can absorb moisture and nutrients from the air and substrate. The fungal component provides structure and protection, while the photosynthetic partner produces food through photosynthesis. These organisms are commonly found on rocks, trees, and soil, and they play a crucial role in ecosystems by contributing to soil formation and serving as indicators of environmental health. Lichens are often used in studies related to climate change and air quality due to their sensitivity to pollutants.