Primary growth is initiated at root and shoot tips in dome-shaped cell masses called apical meristems. Secondary growth originates at self-perpetuating tissue masses called lateral meristems. List the principal characteristics that distinguish monocots from dicots. Describe a vascular bundle. Most dicot and conifer stems have a ring of vascular bundles that divides ground tissue into two zones, an outer cortex and an inner pith.
Leaves are the main sites of photosynthesis.
Name a local plant that has photosynthesis in its stem. Distinguish nodes from internodes, tell where buds are located, and indicate how cross sections of monocot stems differ from those of dicot stems. Briefly describe how leaves develop and how they are arranged on stems. A root tip has a dome-shaped mass, called the root cap. Root hairs are epidermal cell extensions that increase absorptive surface area.