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Cnidarians Quiz
Porifera, Cnidaria, Worms
15
Biology
Undergraduate 2
03/25/2011

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Term
Eukarya, Animalia
Definition
Domain & Kingdom of animals
Term
multicellular
heterotrophic (most)
aerobic (most)
motile (at some point)
sexual reproduction
embryonic development
Definition
Characteristics of an animal
Term
Invertebrates
Definition
animals without a backbone
Term
Porifera
Definition
Phylum with: Sponges
Term
Cnidaria
Definition
Phylum including: Coral, jellyfish, sea anemones, siphonophores
Term
Platyhelminthes
Definition
Phylum including: Flatworms, flukes, tapeworms
Term
Nematoda
Definition
Phylum including: Roundworms
Term
Annelida
Definition
Phylum including: Segmented worms
Term
Cephalization
Definition
having a definite head end; evolutionary trend 1st seen in platyhelminthes
Term
Multicellularity
Definition
evolutionary trend first seen in Protista
Term
coelom
Definition
a body cavity in which digestive tract and other internal organs are suspended
Term
0-->2-->3 germ layers in embryo
(ectoderm, mesoderm, endoderm)
Definition
Evolution of germ (tissue) layers
Term
Evolutionary trend of digestive cavity
Definition
No digestive cavity --> gastrovascular cavity --> one-way gut
Term
Mostly marine; assymetry; no true organs/tissues (cellular organization); filter feeders; asexual & sexual reproduction
Definition
Porifera Characteristics
Term
Endoderm, Mesenchyme, Ectoderm
Definition
3 layers of cells in Porifera
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