Animal Diversity Lecture 3
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52 Terms
Bryozoans
Ectoprocta
Lamp Shells
Brachiopoda
Lophotrochozoa
Platyhelminthes, Ectoprocta, Brachiopoda, Nemertea, Annelida, Mollusca
endoderm, mesoderm, ectoderm
Aceolomate tissue layers
contain a ceolom
Coelomate Body Plan
Coelom
Body Cavity
Coelom
Inside Mesoderm Layer
Lophophore
How ectoprocta and brachiopoda collect food
Ectoprocta
Mostly marine, some freshwater, colonies can contain millions of zooids
Ectoprocta
Also known as Moss Animals
Ectoprocta
Ciliated lophophore feeding structure
Ectoprocta
distinct alimentary canal
Ectoprocta
Muscles for retracting lophophore
Ectoprocta
Marine species secrete calcite
Brachiopoda
Has two shells on the upper end
Brachiopoda
marine “worm” with dorsal and ventral shell
pedicle
What are the shells on top of a stalk in a brachiopod called?
Brachiopoda
Sessile and Benthic
~335
How many extant species of Brachiopoda
>30,000
How many fossil species of Brachiopoda
Permian-Triassic Extinction
Why did Brachiopoda population decrease so much?
Nemertea, Annelida, Mollusca
Have a trocophore
Nemertea
Ribbon Worms
Annelida
Segmented Worms
Mollusca
Snails, Clams, Squid, Octopus
Nemertea
Proboscis Worms or Ribbon worms
Nemertea
Unsegmented Worms
Nemertea
Mostly marine, few freshwater, and a few terrestrial
Nemertea
Free-living and most are predatory
Can grab things for eating
Sensory Papillae in Nemertea
Nemertea
Size Range 5mm to 30 meters
Annelida
Segmented Worms
Annelida
Terrestrial, freshwater and marine
Annelida
1 mm to 3 meters, asexual and sexual reproduction
Cetae
Hair-like structure
Walls
Septum
oligochaeta, polychaeta, hirudinea
Classes of Annelida
Oligochaeta
Earthworms and relatives
Polychaets
Polychaeta
Leeches
Hirudinea
Lophotrochozoa
Annelida Class
Oligochaeta
Mostly terrestrial, also freshwater and marine
soil properties
Earthworms alter
Polychaeta
Primarily marine, a few terrestrial
Polychaeta
Incredibly diverse
Parapodia
Polychaeta cetae
Whale fall communities
deep sea ecosystem that forms around a whale carcass
Hirudinea
Terrestrial and freshwater
Hirudinea
Some predatory and others are Haemophagic
Haemophagic
Feeding on blood
Hirudinea
Medicinal uses
Hirudin
Anticoagulant peptide
Note 
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