AP BIOLOGY

Detailed explanation-1: -Nonvascular plants are called bryophytes. Nonvascular plants include liverworts, hornworts, and mosses. They lack roots, stems, and leaves. Nonvascular plants are low-growing, reproduce with spores, and need a moist habitat.

Detailed explanation-2: -Bryophytes. Bryophytes have no roots, leaves or stems. Moss and liverworts belong to this group.

Detailed explanation-3: -Nonvascular plants (often referred to collectively as the bryophytes) include three groups: the mosses (Bryophyta), approximately 15, 000 species; liverworts (Hepaticophyta), approximately 7500 species; and hornworts (Anthocerophyta), approximately 250 species (Table 1).

Detailed explanation-4: -Non-vascular plants are those without a vascular system (that is they lack xylem and phloem ) and grow from spores. They do not have roots, stems, or leaves (although the lobes of some liverworts can look like leaves).

Detailed explanation-5: -Vascular plants are also known as tracheophytes. They include pteridophytes, gymnosperms and angiosperms. Non-vascular plants lack a specialised vascular system for transporting water and nutrients. They may contain simple structures that may specialise to perform transportation, e.g. algae and bryophytes.