Stem Diagram Labeled. External root structure. External structure of a woody stem.
Blood vessels present in the periosteum provide energy to the cells on the surface of the bone and penetrate into the bone itself to nourish the cells inside of the bone. A leaf gap is where the vascular tissue branches off to a frond. 291 26 january 2001 by n m.
The stem anatomy of ferns is more complicated than that of dicots because fern stems often have one or more leaf gaps in cross section.
Using stem and leaf plot diagrams. The stem anatomy of ferns is more complicated than that of dicots because fern stems often have one or more leaf gaps in cross section. Single layered epidermis consisting of rectangular cells is present in the younger stages but at maturity it gets ruptured due to secondary growth and replaced by cork. External structure of a woody stem.