Tissues organs and systems in plants r1

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  • 1. Photosynthesis and RespirationIntroduction to plant organ systems
  • 2. Review – “layers” of cell organization CELLS basic unit become specialized
  • 3. TISSUESsimilar cells working together CELLS basic unit become specializedto perform a specific function
  • 4. ORGANSdifferent types of tissues working together TISSUES similar cells working together CELLS basic unit become specialized to perform a specific function to perform a specific function
  • 5. ORGAN SYSTEMS different organs working together ORGANSdifferent types of tissues working together TISSUES similar cells working together CELLS basic unit become specialized to perform a specific function to perform a specific function to perform a specific function
  • 6. ORGANISMdifferent organ systems working together ORGAN SYSTEMS different organs working together ORGANSdifferent types of tissues working together TISSUES similar cells working together CELLS basic unit become specialized to perform a specific function to perform a specific function to perform a specific function
  • 7. Plant OrganizationSTOP HERE and Brainstorm! Things to consider What do you know about the structure of plants? What do plants require to survive? How do different parts of the plant function to help the plant live? What sorts of cells and tissues do you think plants must have?
  • 8. Plant Organization Plants have two organ systems The shoot system is above ground and includes the organs such as leaves, buds, stems, flowers and fruits. The root system includes those parts of the plant below ground
  • 9. Plants have four types of organs . . .Roots- anchor plant- absorb minerals and water- stores nutrientsStems- support and elevate leaves- transport between roots and shootsLeaves- site of photosynthesisReproductive Organs- variable- include flowers, seeds, fruit
  • 10. . . and three types of tissue systems Dermal Tissue - often called the epidermis - a single layer of cells that forms a protective “skin” - secretes a waxy cuticle to prevent water loss Vascular Tissue - transports water, minerals and sugars between roots and shoots - arranged in strands called vascular bundles
  • 11. There are two types of vascular tissue:1) Xylem – transports water and dissolved minerals UPWARD2) Phloem – transports sugars (food) made in leaves DOWNWARD to roots and to other parts of shoot system
  • 12. . . and three types of tissue systems Ground Tissue - cells that fill the space between the epidermis and vascular bundles - ground tissue cells have two main functions (1) structural – support the plant (2) metabolic – life functions like photosynthesis
  • 13. Leaf – cells and tissues
  • 14. Vascular Tissue System Monocots Dicots- Long tissue strands -Long tissue strands calledcalled vascular bundles vascular bundles arrangedscattered through stems in rings within stem, to form a cylinder shape