Bryophytes are small, non-vascular plants that include mosses, liverworts, and hornworts. They typically grow in moist environments and play a crucial role in ecosystems by helping to retain water and prevent soil erosion. Unlike other plants, bryophytes do not have true roots, stems, or leaves, which makes them unique in the plant kingdom. These plants reproduce using spores instead of seeds, and they have a simple life cycle that includes a dominant gametophyte stage. Bryophytes are important for biodiversity and can often be found in various habitats, from forests to wetlands, contributing to the overall health of the environment.