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Lophotrochoza, eumetazoans - Coggle Diagram

- - - - dorasl side
      - close when threatened
    - - encapsulation of foreign material
        
        mantle secretes layers of nacre
        
        protect rest of organism
        
        mantle 3 folds
        
        outer/inner/middle
    - - tube
        
        incurrent siphon
      - food particles trapped in gills
        
        directed to mouth and digestive system
      - non food particles
        
        removed via excurrent siphon
    - - filter feeders
        
        remove nutrients+toxic pollutants
        
        improve water quality
  - - - the evolutionary trend toward concentrating nervous tissue, the mouth, and sense organs toward the front end of an animal
      - formation of head
    - - 180 twisting of visceral mass
    - - spiral
      - cone
      - some have no shell
        
        slugs
  - - - well defined head
    - - most intelligent invertebrates
    - - arm
        
        suckers along the appendage
      - tentacle
        
        suckers at terminal end of appendage
        
        used for feeding/mobility/reproduction
    - - two strong beaks
        
        kill/tear prey into smaller pieces
    - - control buoyancy
      - others
        
        invagaination of mantle formed internally
        
        or entirely lost
    - - except nautilus
      - camoflage/social communication/confuse prey
    - - expell water from bodies via a siphon
        
        energy inefficient
        
        emergency
  - - - Shock absorption
      - Hydrostatic skeleton
      - internal organ development
      - Body shape
  - - - shell
  - - - visceral mass
        
        above foot
  - - - algae/bacteria/flesh
      - cilia move particles
        
        gastrointestinal system
- - - - medusa dominant
        
        mobile
    - - polyp dominant
        
        sessile
    - - ectoderm
      - endoderm
      - diploblasts
    - - grastrula
        
        mouth+anus
    - - alternate between polyp and meduse form
        
        feeding polyps (2n)
        
        reproductive polyp
        
        mitosis
        
        medusa(2n)
        
        dioecious
        
        1 more item...
        
        mature
        
        break off
        
        free swimming medusae
        
        after fetrilisation
        
        blastula
        
        planula larva
        
        1 more item...
        
        produce 2 types of polyps
        
        capturing prey
        
        asexual reproduction
    - - cnidocytes
        
        pressurised organelle
        
        has a coiled harpoon like thread
        
        nematocyst
        
        ejects thread
        
        punctures target
        
        eversion
        
        2 more items...