"Vascular System absent"; gametophyte dominant, sporophyte attached to gametophyte; "homosporous" are distinguishing characters of:

Explanation

The distinguishing characters "Vascular System absent; gametophyte dominant, sporophyte attached to gametophyte; homosporous," are indicative of the bryophyte group known as liverworts (Hepatophyta). Liverworts are non-vascular plants, meaning they lack a true vascular system for the transport of water and nutrients. Instead, they rely on diffusion for these processes. The sporophyte generation is physically attached to the gametophyte. The sporophyte typically consists of a capsule (containing spores) and a seta (stalk) and remains dependent on the gametophyte for nutrients and support.