Botany · Ch 10 — Secondary Growth
Differences Between Phellem and Phelloderm
10.1.6.4
Differences Between Phellem and Phelloderm
Phellem and phelloderm are both produced by the same meristem - the phellogen - yet end up structurally and functionally opposite: one dead and protective, the other living and nutritive. The table below lines up their differences side by side: which face of the phellogen each forms on, how compactly their cells are arranged, whether they are protective or food-synthesising, whether their cells are …
Table 10.1.6.4-t1Differences Between Phellem and Phelloderm
| Phellem (Cork) | Phelloderm (Secondary cortex) |
|---|---|
| It is formed on the outer side of phellogen | It is formed on the inner side of phellogen |
| Cells are compactly arranged in regular tiers and rows without intercellular spaces | Cells are loosely arranged with intercellular spaces |
| Protective in function | As it contains chloroplast, it synthesises and stores food |