PLANT TISSUES: VASCULAR TISSUES - PowerPoint PPT Presentation

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PLANT TISSUES: VASCULAR TISSUES

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PLANT TISSUES: VASCULAR TISSUES The Circulatory System of Plants! The Vascular System For plants to survive, they must take in nutrients & water from environment ... – PowerPoint PPT presentation

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Title: PLANT TISSUES: VASCULAR TISSUES


1
PLANT TISSUESVASCULAR TISSUES
  • The Circulatory
  • System of Plants!

2
The Vascular System
  • For plants to survive, they must
  • take in nutrients water from environment
  • transport water up to the leaves, and glucose
    back down for storage
  • The plants vascular system is their circulatory
    system designed to transport materials within
    the plant!

3
Plant Tissues (Cont)
  • Ground Tissue
  • The internal non-vascular tissues are called the
    parenchyma (think flesh of a watermelon)
  • Could be specialized for storage, support,
    photosynthesis, etc.

4
Plant Tissues (Cont)
  • Meristematic Tissue
  • Cells that can rapidly divide by Mitosis? produce
    all growth in plants
  • Apical Meristems are found at the tips of stems,
    roots, in rings around the stems of larger
    plants, etc.

5
Plant Tissues (Cont)
  • Dermal Tissue
  • Cells that protect the outer layers of a plant
    epidermis is the outermost layer.
  • These cells protect plants from disease
    predators, and prevent water loss (Cuticle).
  • Cork protects inner tissues from injury.

6
Plant Tissues (Cont)
  • Vascular Tissue
  • Cells that specialize in transport of water
    other substances among cells
  • Two types of tissues
  • Xylem
  • Phloem

7
Vascular Tissues (Cont)
  • Xylem
  • water-conducting cells - from roots up to rest of
    the plant
  • after maturation, these cells die leaving
    thick-walled, hollow cells that are pitted or
    open at the ends ? ideal for water transfer

8
Vascular Tissues (Cont)
  • Phloem
  • food-conducting cells - from one part of plant to
    another (mostly down towards roots)
  • these living cells have large pores at their ends
    and share cytoplasm? ideal for food transfer

9
Xylem and Phloem Compared
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