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Leaves - Coggle Diagram

- - - - external
        
        thick, fleshy
        
        reduces surface area
        
        favors water conservation
        
        reduces CO2 uptake
        
        dessert habitat
      - internal
        
        few air spaces
        
        reduces internal evaporation
        
        reduce stomata
        
        deeper photosynthesis
        
        mesophyll more transparent
  - - - flexible
      - edible
      - soft
  - - - short
      - long
  - - - 2 types
        
        microscopic green leaves
        
        cluster of spines
        
        axillary buds
      - succulent
  - - - stops growing
  - - - arid enviroments
- - - - lamina
  - - - abaxial side
    - - adaxial
    - - stalk
      - no petiole
        
        sessile leaf
  - - - leaflets
        
        petiolule
        
        rachis
        
        shapes
        
        hastiform
        
        peltiform
        
        cordiform
        
        sagittiform
    - - serrate
      - lacerate
      - divided
      - dentate
      - entire
  - - - reticulate venation
      - parallel venation
  - - - break leaf off
      - leaf scar
- - - - stomata
        
        crypts
    - - epidermal cells
      - guard cells
      - trichomes
        
        glandular
        
        nonglandular
  - - - palisade parenchyma
        
        palisade mesophyll
      - most photosynthetic tissue
    - - lower portion
        
        spongy mesophyll
        
        open and loose aerenchyma
  - - - one midrib
        
        midvein #
        
        lateral veins
        
        minor veins
        
        water from xylem
        
        sugar in phloem
    - - nonconducting cells
        
        mucilage
        
        tannin
        
        starch
      - bundle sheath extension
        
        rigidity
  - - - stem and lamina
    - - provide photosynthesis
      - protect
- - - - bud scales
    - - tendrils
    - - fleshy leaf bulbs
    - - digesting insects
      - trapping insects
- - - - leaf protoderm
      - leaf ground meristem
      - cells are meristematic
  - - - abaxial epidermis #