compare and contrast the following xylem and phloem
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XYLEM
1) In plants water and mineral salts are transported by xylem tissue .
2) Xylem consists of trachieds , vessels , xylem fiber and xylem parenchyma.
3) Only xylem parenchyma is living tissue .
4)Trachieds , vessels , xylem fibers are dead tissues .
5) Xylem gives mechanical strength to the plant .
6) Conduction of water by xylem is unidirectional i.e.,from roots to aplical parts of the plant.
7) Xylem occupies the center of the vascular bundle .
8) Xylem is star shaped.
9) Tubular with hard walled cells.
PHLOEM
1) In plants food material is transported by phloem tissue .
2) Phloem consists of sieve cells.
3) Sieve tubes , sieve cells companion cells and phloem parenchyma are living cells.
4) Phloem fibers are dead tissues .
5) phloem doesn't give mechanical strength .
6) Food material conduction is bidirectional i.e.,from leaves to storage organs or growing points and from storage organs to growing parts of plants .
7) Phloem occurs on outer side of the vascular bundle .
8) phloem is not star shaped .
9)Tubular with soft walled cells.
1) In plants water and mineral salts are transported by xylem tissue .
2) Xylem consists of trachieds , vessels , xylem fiber and xylem parenchyma.
3) Only xylem parenchyma is living tissue .
4)Trachieds , vessels , xylem fibers are dead tissues .
5) Xylem gives mechanical strength to the plant .
6) Conduction of water by xylem is unidirectional i.e.,from roots to aplical parts of the plant.
7) Xylem occupies the center of the vascular bundle .
8) Xylem is star shaped.
9) Tubular with hard walled cells.
PHLOEM
1) In plants food material is transported by phloem tissue .
2) Phloem consists of sieve cells.
3) Sieve tubes , sieve cells companion cells and phloem parenchyma are living cells.
4) Phloem fibers are dead tissues .
5) phloem doesn't give mechanical strength .
6) Food material conduction is bidirectional i.e.,from leaves to storage organs or growing points and from storage organs to growing parts of plants .
7) Phloem occurs on outer side of the vascular bundle .
8) phloem is not star shaped .
9)Tubular with soft walled cells.
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31
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Explanation:
XYLEM:
- In plants water and mineral salts are transported by xylem tissue
- Xylem consists of trachieds, vessels, xylem fibre and xylem parenchyma
- Only xylem parenchyma is living tissue
- Trachieds, vessels, xylem fibre are dead tissues
- Xylem gives mechanical strength to the plant
- Conduction of water by xylem is unidirectional i.e.,from roots to apical parts of the plant
- Xylem occupies the center of the vascular bundle
- xylem is star shaped
- Tubular with hard walled cells
PHLOEM:
- In plants food material is transported by phloem tissue
- phloem consists of sieve cells
- Sieve tubes ,sieve cells companion cells and phloem parenchyma are living cells
- phloem fibres are dead tissues
- phloem doesn't give mechanical strength
- Food material conduction is bidirectional i,.e., from leaves to storage organs or growing plants and from storage organs to growing parts of plants
- Phloem occurs on outer side of the vascular bundle
- Phloem is not star shaped
- Tubular with soft walled cells
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