AP BIOLOGY

Detailed explanation-1: -Mosses and liverworts are small, primitive, non-vascular plants. They lack the conductive tissue most plants use to transport water and nutrients. Instead, moisture is absorbed directly into cells by osmosis.

Detailed explanation-2: -Vascular plants have xylem and phloem that transport water and nutrients to the rest of the plant. Nonvascular plants absorb nutrients and water directly into their cells.

Detailed explanation-3: -Nonvascular plants helped make the oxygen in the Earth’s atmosphere, allowing the advancement of other plants and animals. Nonvascular plants also provide microhabitats for many species of animals. Worms and insects that benefit soil quality reside among bryophytes.

Detailed explanation-4: -Like bryophytes, algae are nonvascular: They lack the xylem and phloem tissues that transport fluids and nutrients internally. They do not have leaves, roots or flowers, nor do they have rhizoids or leaflike structures like some nonvascular plants. Algae do, however, use chlorophyll to convert sunlight into energy.

Detailed explanation-5: -Seedless nonvascular plants are small, having the gametophyte as the dominant stage of the lifecycle. Without a vascular system and roots, they absorb water and nutrients on all their exposed surfaces.