| Cross-section through a dicot root at the beginning of secondary growth |
 | - Large (169 Kb)
- Scroll down
to information
Without labels
Legend:
1 epidermis
3 phloem
4 xylem
2 cortex
| |
English name: Sunflower
Scientific name: Helianthus annuus
Familia: Compositae
Classis: Dicotyledonas
Phylum: Angiospermae
Regnum: Plantae
|
| Cross-section through a dicot root. The vascular cambium that builds secondary xylem (to the inside) and phloem (to the outside) has developed between the primary vascular xylem and phloem. In the outer layer of the pericycle the cork cambium develops which will form cork and cause degeneration of all (endodermis and cortex) tissues located outside the pericycle. |