AP BIOLOGY

Detailed explanation-1: -Vascular tissue is comprised of the xylem and the phloem, the main transport systems of plants. They typically occur together in vascular bundles in all plant organs, traversing roots, stems, and leaves. Xylem is responsible for the transport of water and dissolved ions from the roots upwards through the plant.

Detailed explanation-2: -The vascular plants are well-developed and advance plants that include ferns, seed plants, angiosperms, and gymnosperms. The vascular plants have vascular tissues, including xylem and phloem for conducting water and integrating food, respectively.

Detailed explanation-3: -Together with phloem (tissue that conducts sugars from the leaves to the rest of the plant), xylem is found in all vascular plants, including the seedless club mosses, ferns, horsetails, as well as all angiosperms (flowering plants) and gymnosperms (plants with seeds unenclosed in an ovary).

Detailed explanation-4: -Non-vascular plants are plants without a vascular system consisting of xylem and phloem. Instead, they may possess simpler tissues that have specialized functions for the internal transport of water.

Detailed explanation-5: -Land plants solved this problem by developing roots as well as stems and leaves, and a system of vessels (xylem and phloem) to connect them. All four of the land plant groups have these features (except mosses do not have vessels).