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25 Cards in this Set

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Phylum: Porifera
- Cellular level
- Asymmetrical
- No germ layers
- Protosome
- Acoelomate
- Spicules & increased SA to Vol ration
Phylum: Cnidaria
- Tissue level
- 2 germ layers
- Protosome
- Radial symmetry
- Acoelomate
- Polyp and medusa form. Cnidoblasts with nematocysts. Gastrovascular cavity.
Phylum: Platyhelminthes
- Organ level
- 3 germ layers
- Protosome
- Bilateral symmetry
- Acoelomate
- Cephalization & blind sac digestion
Phylum: Nematoda
- Organ level
- 3 germ layers
- Protosome
- Bilateral
- Pseudocoelomate
- Tube within a tube, Parasites
Phylum: Mollusca
- Organ level
- 3 germ layers
- Protosome
- Bilateral
- Eucoelomates
- Mantle, Muscular foot, and open circulatory system
- 3 classes: Bivalves, Gastropods, Cephalopods
Class: Bivalves
Clams, Muscles, etc.
Class: Gastropods
Snails, Conches, Slugs, etc.
Class: Cephalopods
Squid, Octopuses, etc.
Phylum: Annelida
- Organ level
- 3 germ layers
- Protosome
- Bilateral
- Eucoelomates
- Metamerism, Closed circ. system & longitudinal and round smooth muscle.
- Includes leeches and earthworms
Phylum: Arthropoda
- Organ level
- 3 germ layers
- Protosome
- Bilateral
- Eucoelomates
- Exoskeleton w/ jointed appendages & well developed nervous system.
Phylum: Arthropoda
Class: Arachnida
- Spiders
- Book lungs
Phylum: Arthropoda
Subphylum: Crustacea
- Crabs, Cray fish, etc.
- Gills
Phylum: Arthropoda
Class: Insecta
- Dragonflies, Grasshoppers, etc.
- Spiracles/Tracea
Phylum: Echinodermata
- Organ level
- 3 germ layers
- Duetrostome
- Bilateral young, pentaradial adults
- Eucoelomate
- Dermal endoskeleton, water vascular system and tube feet.
Phylum: Chordata
- Organ level
- 3 germ layers
- Duetrostome
- Bilateral
- Eucoelomate
4 traits of Phylum: Chordata
1) Notochord
2) Pharyngeal gill slits
3) Postanal tail
4) Dorsal tubular nerve chord (back bone)
Phylum: Chordata
3 Subphylums (1 important one)
- Urochordata
- Cephalochordata
- Vertebrata <-- know this one
Subphylum: Vertebrata
2 Superclasses
- Agnatha
- Gnathostomata <--- KNOW THIS ONE!!
Superclass: Gnathostomata
6 Classes
- Class Chondrichthyes
- Class Osteichthyes
- Class Amphibia
- Class Reptilia
- Class Aves
- Class Mammalia
Class: Chondrichthyes
- Cartilaginous fish
- NO BONES
- NO SWIM BLADDER
- Respiration: Gills
- Sharks & Rays
Class: Osteichthyes
- Bony fish
- Swim bladder

- Respiration: gills!
- Salmon, tuna, catfish, etc.
Class: Amphibia
- Ectothermic (dependent on environmental heat sources)
- Dual life
- Respiration: 50/50 lungs and skin
- Frogs, salamanders, newts
Class: Reptilla
- AMNIOTIC EGGS
- Respiration: LUNGS

- Ectothermic
- Completely terrestrial
- Snakes, turtles, lizards
Class: Aves
- ENDOthermic
- Feathers instead of scales

- Amniotic eggs
- Birds
Class: Mammalia
- Hair
- Mamary glands
- 2 sets of teeth

- Endothermic