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Types of Tissue
- Dermal
- Ground
- Vascular
- Meristematic
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Epidermis
- Dermal tissue
- Outer most layer of cells
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Parenchyma
- Ground tissue
- Most common cell in plant
- Thin walled, large vacuole
- Photosynthesis, storage, and support
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Collenchyma
- Ground tissue
- Near surface of stem
- Uneven wall thickness
- Flexible support
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Sclerenchyma
- Ground tissue
- Thick cell walls (may contain lignin)
- Strength and support
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Xylem
- Vascular tissue
- Tracheids and vessel elements
- Conduct water and nutrients upward from roots
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Phloem
- Vascular tissue
- Sieve tube members and companion cells function in movement of photosynthetic products
- Conduct down the stem
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Primary Meristems
- Meristematic tissue
- Small, actively dividing cells in roots and tips
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Pericycle
- Meristematic tissue
- Layer of tissue found just outside the vascular cylinder in roots.
- Divide to produce branch roots
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Vascular Cambium
- Meristematic tissue
- Lateral meristem, small actively dividing cells found between the xylem and phloem
- Produce secondary growth and increased girth
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Cork Cambium
- Meristematic tissue
- Lateral meristem just inside cork layer of wood plant
- Produces secondary growth
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Casparian Strip
- Walls of endodermis have layer of waxy tissue
- Made of suberin
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