13. Differentiate between:
(b) coleoptile and coleorhiza;
The differences between coleoptile and coleorhiza are as follows:
| Coleoptile | coleorhiza |
| Coleoptile refers to the protective covering that surrounds plumule | Coleorrhiza is the sheath that surrounds the radicle and root cap |
| This sheath can come out of the soil, become green and perform photosynthesis. | Coleorrhiza remains in the soil only. |