CBSE Class 9 Answered
Differentiate between:
Asked by shrey17 | 07 May, 2009, 08:27: AM
Expert Answer
| Xylem | Phloem | |
| 1 | It transports water and minerals from roots to aerial parts of the plant body. | It transports food from leaves to other parts of the plant body. |
| 2 | It is made up of mainly dead elements. | It is made up of mainly living cells. |
| 3 | Xylem is composed of tracheids, vessels, xylem parenchyma and xylem fibres. | Phloem is composed of sieve tubes, companion cells, phloem parenchyma and phloem fibres. |
| Collenchyma | Sclerenchyma | |
| 1 | This tissue is made up of living cells. | This tissue is made up of dead cells |
| 2 | The cells show cytoplasm | Its cells are empty |
| 3 | The cell walls are cellulosic, with uneven deposition at the corners. | The cell walls are lignified with uniform thickening. |
| 4 | It shows wide cell lumen | Cell lumen is narrow here. |
| 5 | Collenchyma provides mechanical support and elasticity to the plant body. | Sclerenchyma provides mechanical support. |
Answered by | 10 May, 2009, 08:43: PM
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