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 with the
    plant!

3
Plant Tissues
  • Cells specialize to take on certain roles within
    the plant. Structures are formed from
    specialized tissues. (See Figure 1,pg. 286)
  • Differentiation
  • A change in the form of cells to allow them to
    carry out a particular function.

4
Plant Tissues (Cont)
  • Meristematic Tissue
  • Cells that can rapidly divide ? produce all
    growth in plants
  • Unspecialized cells 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.
  • On stems and leaves, these cells often produce a
    waxy cuticle.
  • On roots, these cells have fine root hairs to aid
    in absorption of water.

6
Plant Tissues (Cont)
  • Ground Tissue
  • The internal non-vascular tissues
  • Could be specialized for storage, support,
    photosynthesis, etc.

7
Plant Tissues (Cont)
  • Vascular Tissue
  • Cells that specialize in transport of water
    other substances among cells
  • Two types of tissues
  • Xylem
  • Phloem

8
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

9
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

10
Types of Plants
  • MONOCOTS
  • Many vascular bundles throughout the stem
  • DICOTS
  • Vascular bundles arranged in a ring some form
    well-developed ring with bark, etc.
  • THE END!!!
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