DENDROLOGY

Detailed explanation-1: -The vascular plants have two types of seed plants, including gymnosperms and angiosperms.

Detailed explanation-2: -Characteristics of Nonvascular Plants They not only lack vascular tissues; they also lack true leaves, seeds, and flowers. Instead of roots, they have hair-like rhizoids to anchor them to the ground and to absorb water and minerals (see Figure below).

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.