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Xylem | Phloem |
Definition | |
Xylem tissues are the tubular-shaped structure, with the absence of cross walls. This tissue resembles the shape of a star. | Phloem tissues are tubular-shaped, elongated, structures with the presence of walls with thin sieve tubes. |
Location | |
It is located in the centre of the vascular bundle. | It is located on the outer side of the vascular bundle. |
Fibres | |
Xylem fibres are smaller. | Phloem fibres are larger. |
Found In | |
They are present in roots, stems and leaves. | They are present in stems and leaves, which later transports and grow in roots, fruits and seeds. |
Movements | |
These tissues move in a Unidirectional. (only in one direction – upward direction) | These tissues move in a Bidirectional. (both ways – up and down) |
Comprises | |
They live with hollow dead cells. | They live with cytoplasm without the nucleus. |
No of Tissues | |
The total amount of xylem tissue is more. | The total amount of phloem tissue is less. |
Features | |
It consists of tracheids, vessel elements, xylem parenchyma, xylem sclerenchyma and xylem fibres. | It consists of four elements: companion cells, sieve tubes, bast fibres, phloem fibres, intermediary cells and the phloem parenchyma. |
Functions | |
Transports soluble mineral nutrients and water molecules from the roots to the aerial parts of the plant. | Transports food and other nutrients including sugar and amino acids from leaves to storage organs and growing parts of the plant. |
Vascular Bundles | |
Forms vascular bundles with phloem. | Forms vascular bundles with xylem. |
Functions | |
Provides mechanical strength to the plant and helps in strengthening the stem. | Translocates the synthesized sugars by the photosynthetic areas of plants to storage organs like roots, bulbs and tubers. |
Functions | |
It is responsible for replacing the total amount of lost water molecules through transpiration and photosynthesis. | It is responsible for transporting proteins and mRNAs throughout the plant. |
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Patel Jiya 4 years, 1 month ago
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