Final answer:
Seedless nonvascular plants, or bryophytes, lack vascular tissue and true roots, stems, or leaves. They include the liverworts, hornworts, and mosses and absorb water and nutrients through their exposed surfaces.
Step-by-step explanation:
Seedless nonvascular plants, also known as bryophytes, lack vascular tissue which transports water, nutrients, and food in plants. These plants do not have true roots, stems, or leaves but they have stem-like and root-like structures. Examples of seedless nonvascular plants include the liverworts, hornworts, and mosses. They are small in size and their dominant stage of the life cycle is the gametophyte. They absorb water and nutrients through their exposed surfaces as they lack a vascular system.