AP BIOLOGY

Detailed explanation-1: -E) I and Ill are both true. Hint: Since bryophytes are land plants, they must rely on air to survive. Since they lack lignified vascular tissues, they rely heavily on the turgor pressure of their cells for support. As a result, they cannot grow very tall, and most bryophytes are small and unnoticeable.

Detailed explanation-2: -Mosses are non-vascular plants with about 12, 000 species classified in the Bryophyta. Unlike vascular plants, mosses lack xylem and absorb water and nutrients mainly through their leaves.

Detailed explanation-3: -Bryophytes is the informal group name for mosses, liverworts and hornworts. They are non-vascular plants, which means they have no roots or vascular tissue, but instead absorb water and nutrients from the air through their surface (e.g., their leaves).

Detailed explanation-4: -Bryophytes like mosses are small as these are nonvascular plant having only few water conducting strands in central stem. Smaller size makes them rely on diffusion for movement of water in and out of the plants and to use water as a medium for sperm transfer.

Detailed explanation-5: -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.