Monocots and dicots, while having distinct characteristics, share some fundamental similarities in their stem structures: 1. Vascular Tissue: Both monocot and dicot stems contain vascular tissues (xylem and phloem) arranged in vascular bundles. These tissues are responsible for the transport of water, minerals, and sugars throughout the plant. 2. Epidermis: Both types of stems are covered by an epidermis, which is a protective outer layer of cells. 3. Cortex: Both typically have a cortex located between the epidermis and the vascular tissues, though its extent and organization can differ. 4. Pith: Both generally possess a pith in the central region of the stem, which often serves a storage function. 5. Growth: Both undergo primary growth in length from apical meristems. That's 2 down. 3 left today — send the next one.