Seedless plants, like ferns and mosses, reproduce via spores rather than seeds. These plants have a simpler reproductive structure and often thrive in moist environments, where their spores can easily disperse. On the other hand, seed-bearing plants, such as flowering plants and conifers, reproduce through seeds, which are encapsulated in fruits or cones. This method allows for more advanced adaptations and survival strategies, as seeds can remain dormant until conditions are favorable for growth.

In summary, the key distinction lies in their reproduction: seedless plants use spores, while seed-bearing plants rely on seeds. This fundamental difference has implications for their growth patterns, habitats, and ecological roles.