AP BIOLOGY

Detailed explanation-1: -The vascular bundles in the stem are arranged around a ring of cambium, which contains cells that divide to expand the girth of the stem.

Detailed explanation-2: -Most trees and shrubs and many garden annuals and perennials are dicots, and there are many more species of dicots than there are monocots.

Detailed explanation-3: -The arrangement of xylem and phloem is different in dicots than it is in monocots. The xylem is all located in the middle of the dicot root, and bundles of phloem are arranged around it, separated from it by vascular cambium.

Detailed explanation-4: -Dicot stems have a well-defined epidermis with cuticle, a layer of dermis along with multicellular stem hair. The internal structure of a dicot stem mainly consists of epidermis, hypodermis, cortex endodermis, pericycle, vascular strand and pith. Sunflower and Cucurbita are examples of dicot stems.

Detailed explanation-5: -In the dicot root, xylem and phloem are alternately arranged called radial bundles.