Pneumatophores are found in:
1. The vegetation is found in marshy and saline lake
2. The vegetation is found in saline soil
3. Xerophytes
4. Epiphytes
In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order:
| 1. | Root cap, cell division, cell maturation, cell enlargement |
| 2. | Cell division, cell enlargement, cell maturation, root cap |
| 3. | Cell division, cell maturation, cell enlargement, root cap |
| 4. | Root cap, cell division, cell enlargement, cell maturation |