AP BIOLOGY

Detailed explanation-1: -Liverworts are tiny nonvascular plants that have leaf-like, lobed, or ribbon-like photosynthetic tissues rather than leaves. Their rhizoids are very fine, they lack stems, and they are generally less than 10 centimeters (4 inches) tall. They often grow in colonies that carpet the ground.

Detailed explanation-2: -The primary divisions of bryophytes include Bryophyta (mosses), Hapatophyta (liverworts), and Anthocerotophyta (hornworts). Due to the lack of vascular tissue, non-vascular plants typically remain close to the ground and are found in moist environments.

Detailed explanation-3: -Nonvascular plants are small, simple plants without a vascular system. They do not have a phloem or xylem. Nonvascular plants are very small because their lack of a vascular system means they do not have the mechanics required for transporting food and water far distances.

Detailed explanation-4: -Non-vascular plants are generally small in height because they lack the vascular tissues that allow plants to draw water up against the downward pull of gravity.

Detailed explanation-5: -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).