AP BIOLOGY

Detailed explanation-1: -They not only lack vascular tissues; they also lack true leaves, seeds, and flowers.

Detailed explanation-2: -Nonvascular plants lack differentiated tissues like vascular tissues, which separate them from vascular plants that have vascular tissues to transport nutrients and water. They also lack stems, roots, and leaves. But they have stem-like, root-like, and leaf-like structures that work just like stem, roots, and leaves.

Detailed explanation-3: -Bryophytes such as mosses and algae are non-vascular plants. They do not possess true roots, stems and leaves. Xylem and phloem are absent.

Detailed explanation-4: -Mosses, liverworts and hornworts are collectively called “bryophytes.” Bryophytes are nonvascular plants: They do not have special tissues-tissues that botanists call “xylem” and “phloem”-to transport fluids and nutrients internally.

Detailed explanation-5: -As they lack vascular tissue, they also do not have true roots, stems, or leaves. Nonvascular plants do often have a “leafy” appearance, though, and they can have stem-like and root-like structures. These plants are very short because they cannot move nutrients and water up a stem.