DENDROLOGY

Detailed explanation-1: -These are the nonvascular plants or bryophytes (mosses, liverworts, and hornworts), the seedless vascular plants (clubmosses and ferns including, horsetails, club mosses, and whisk ferns), gymnosperms (conifers, cycads, Ginkgo, and gnetophytes), and angiosperms, or flowering plants.

Detailed explanation-2: -Mosses, hornworts, and liverworts are nonvascular plants called Bryophytes. There are an estimated 17, 000 species of bryophytes and occupy almost every habitat type. Some species of algae are also considered nonvascular plants, particularly green algae.

Detailed explanation-3: -Liverworts, like mosses, are land plants that do not have a vascular system. The lack of veinlike tubes to conduct moisture and nutrients throughout the plant limits them to a small size. Like ferns, they produce spores instead of seeds. Their form of reproduction usually requires them to be in wet or moist places.