Comparation Pholem and Xylem
Comparison chart
| |Phloem |Xylem |
|Function: |Transportation of food and nutrients such as |Water and mineral transport from roots to aerial|
| |sugar and amino acids from leaves to storage |parts of the plant. |
| |organs and growing parts of plant. This movement| |
| |of substances is called translocation. | |
|Movement: |Bidirectional (Moves up or down the plant's stem|Unidirectional (Moves up the plant's stem) |
| |from "source to sink") | |
|Occurrence: |Roots, stems and leaves. transports sucrose to |Roots, stems and leaves |
| |growth (roots and shoots) and storage regions of| |
| |the plant (seeds fruit and swollen roots) | |
|Additional Functions: |Forms vascular bundles with xylem |Forms vascular bundles with phloem and gives |
| | |mechanical strength to plant due to presence of |
| | |lignin cells. The lignified secondary wall also |
| | |makes the xylem waterproof and prevent it from |
| | |collapsing under the pressure of water |
|
| |Phloem |Xylem |
|Function: |Transportation of food and nutrients such as |Water and mineral transport from roots to aerial|
| |sugar and amino acids from leaves to storage |parts of the plant. |
| |organs and growing parts of plant. This movement| |
| |of substances is called translocation. | |
|Movement: |Bidirectional (Moves up or down the plant's stem|Unidirectional (Moves up the plant's stem) |
| |from "source to sink") | |
|Occurrence: |Roots, stems and leaves. transports sucrose to |Roots, stems and leaves |
| |growth (roots and shoots) and storage regions of| |
| |the plant (seeds fruit and swollen roots) | |
|Additional Functions: |Forms vascular bundles with xylem |Forms vascular bundles with phloem and gives |
| | |mechanical strength to plant due to presence of |
| | |lignin cells. The lignified secondary wall also |
| | |makes the xylem waterproof and prevent it from |
| | |collapsing under the pressure of water |
|