Question
Distinguish between:
Xylem tissue and Phloem tissue
Xylem tissue and Phloem tissue
| Xylem tissue | Phloem tissue | ||
| 1. | It transports water and mineral ions absorbed by the roots to different parts of the plant. | 1. | It transports organic products of photosynthesis from the leaves to different parts of the plant. |
| 2. | The principal conducting elements of xylem are tracheids and tracheae (vessels). | 2. | The principal conducting elements of phloem are sieve cells and sieve tubes with companion cells. |
| 3. | The conduction occurs only in upward direction. | 3. | The conduction occurs in both upward and downward directions. |
| 4. | It conducts only water and mineral ions | 4. | Along with the sugars it conducts amino acids, plant hormones and several other substances |
| 5. | For conduction of water in the xylem, the suction force due to transpiration is the principal force | 5. | For conduction of organic food substances the energy required is obtained from ATP |
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