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Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
Presentation03 - Plant and Animal Tissues
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Presentation03 - Plant and Animal Tissues

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  • 1. Tissue an integrated group of cells with a common structure and function
  • 2. Plant tissues
    • Meristematic tissue : rapid cell division, lengthening of shoots and roots
    • Dermal tissue : covering for the plant body
    • Ground tissue : support, photosynthesis, and storage
    • Vascular tissue : conduction of water, food, and dissolved minerals; strengthens and supports the plant
  • 3. Meristematic Tissue
    • cells that do not differentiate
    • cells retain the ability to divide
    • Types:
      • Apical – primary growth at root and shoot tips
      • Lateral – secondary growth in trees and shrubs
      • Intercalary – secondary growth in monocot stems
  • 4. Apical meristem
    • In shoot tips and root tips
    • Allium cepa root tip
    Root cap Apical meristem Region of cell differentiation/maturation Region of cell elongation Region of cell division
  • 5. Dermal Tissue
    • Single layer of cells called the epidermis in herbaceous plants
      • guard cells
      • trichomes
      • root hairs
    • Functions
      • absorption
      • secretion of cuticle
      • protection
      • control of gas exchange
    Epidermis Cuticle
  • 6. Ground Tissue PARENCHYMA COLLENCHYMA SCLERENCHYMA Characteristics
    • spherical
    • thin-walled
    • living, metabolizing tissue
    • elongated cells with unevenly thickened cell walls
    • alive at maturity
    • with primary and secondary cell walls
    • dead at functional maturity
    Location
    • throughout the plant
    • beneath the epidermis in young stems and in leaf veins
    • fibers in wood, bark, leaves, stems
    • sclereids in fruits and seeds
    Functions
    • photosynthesis and respiration
    • storage
    • regeneration
    • flexible support system
    • structural support
    Appearance
  • 7. Vascular Tissue
    • Xylem
      • Conducts water and dissolved minerals from the roots
    • Phloem
      • Conducts dissolved food materials, carbohydrates, in solution
    • Continuous throughout plant
    • Support plant body
  • 8.  
  • 9. All 4 types of tissues are present in the root tip
  • 10. Young dicot stem Young monocot stem
  • 11.  
  • 12. FOUR TYPES OF ANIMAL TISSUES
  • 13. Epithelial Tissue (Covering)
    • Tightly-joined closely-packed cells
    • One side of exposed to air or internal fluid, other side attached to a basement membrane
    • Covers outside of the body and lines internal organs and cavities
    • Barrier against mechanical injury, invasive microorganisms, and fluid loss
    • Provides surface for absorption, excretion and transport of molecules
  • 14. Types of Epithelial Tissue
    • Cell shape
      • Squamous
      • Cuboidal
      • Columnar
    • Number of cell layers
      • Simple
      • Pseudostratified
      • Stratified
    • RELATE STRUCTURE TO FUNCTION!
  • 15.
    • Binding and support of other tissues
    • Large amount of extracellular matrix with fewer cells
    • ECM - network of fibers in liquid, jelly-like or solid matrix
  • 16. Muscle Tissue (Movement)
    • Composed of long cells called muscle fibers
    • Contraction  movement
  • 17. Nervous tissue (Control)
    • Senses stimuli and transmits nerve impulses
    • Single cell body with long extensions (axons and dendrites)
    Axon Dendrite Cell body

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