Structure of a Dicot Stem

Sure! The internal structure of a dicot stem, as per the NCERT syllabus, consists of the following parts:

• Epidermis: It is the outermost layer and is usually single-layered. It can have a waxy coating called the cuticle to prevent water loss.
• Cortex: This lies below the epidermis and is composed of three types of cells: the collenchyma (provides mechanical support), the parenchyma (stores food), and the endodermis (innermost layer of the cortex).
• Vascular Bundles: These are arranged in a ring and are open and conjoint. Each bundle has xylem (water transport) and phloem (nutrient transport).
• Pith: The central part of the stem, made up of parenchymatous cells that store nutrients.