Young Root of Broad Bean (Cross Section)
Vicia faba
This cross section of a young broad bean (Vicia faba) root demonstrates the classical primary anatomy of a dicotyledonous root system. Surrounding the exterior is a single-layered epidermis (epiblem), enclosing an extensive parenchymatous cortex composed of large, thin-walled storage cells with intercellular air spaces. The innermost layer of the cortex forms a distinct endodermis surrounding the central stele. Within the vascular cylinder, alternating radial strands of primary xylem and primary phloem are clearly delineated, showcasing characteristic exarch development where protoxylem elements lie toward the periphery and metaxylem vessels extend toward the center, surrounding a well-defined parenchymatous pith.
- Category
- Botany & Plants
- Magnification
- 20x
- Stain
- Fast Green
- Tags
- young root of broad bean, Vicia faba, broad bean root, dicot root cross section, plant anatomy, vascular cylinder, primary xylem, primary phloem, stele, endodermis, cortex parenchyma, epidermis, exarch xylem, metaxylem, protoxylem, root parenchyma, pith, botanical histology, plant cell wall, fast green stain
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