What type of vascular arrangement do dicots typically exhibit in their stems?

Dicots typically exhibit vascular bundles arranged in a ring-like pattern within their stems. This arrangement is characteristic of dicotyledonous plants, which are defined by having two cotyledons (seed leaves). The ring formation allows for the differentiation between primary and secondary growth. In dicots, the vascular tissue is organized such that xylem (responsible for water transport) is located toward the interior of the ring and phloem (responsible for nutrient transport) is found toward the exterior. This arrangement enables efficient transport of substances and supports growth as the plant matures, allowing for the development of growth rings during secondary growth, which is common in many woody dicots.

In contrast, monocots generally feature scattered vascular bundles throughout their stems, which does not support the same type of secondary growth as seen in dicots. The presence of vascular bundles varies significantly across different plant groups, reflecting their evolutionary adaptations and roles in growth and support.