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Tissue and the Primary Growth of stems, Crosslink description :parenchyma…

- - - - photosynthesis
      - chloroplast
  - - - short and wide
      - one or two perforations
      - dead at maturity
      - flowering plant mostly
      - non flowering fern,horsetail and gymnosperm
      - tracheids
      - vessel element
    - - sclereids
        
        long and narrow
        
        tapered end
        
        no perforations
        
        dead at maturity
        
        found in vasular plant
        
        pits and pits pair
      - fibers
        
        long
        
        many are dead
        
        few alive
        
        involved in storage
- - - - stomata
  - - - tracheids
        
        long
        
        ends pointed
      - vessel element
        
        short
        
        end flat
      - annular thickening
      - helical thickening
      - scaliariform thickening
      - reticulate thickening
      - circular border pits
      - pits membrane
      - perforation
      - stele
    - - sieve cells
        
        albuminous cell
      - sieve tube members
        
        companion cells
      - sieve pores
      - sieve element
      - sieve areas
      - sieve tube
      - sieve plate
      - stele #
    - - pith
      - xylem and phloem together
      - collateral
      - primary xylem
      - primary phloem