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20 Cards in this Set
- Front
- Back
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sponges
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porifera
2 layers of cells sessile no nervous system spicules hermaphrodites fragmentation (asexual) |
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jellyfish
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cnidarians
2 specialized layers w/ mesoglea 1st true multicellular one opening digestive system nerve net nematocysts 2 stage life cycle polyps sessile asexual medusas oval and free swimming, sexual (hermaphro) |
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planaria
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platyhelminthes
true organs 3 cell layers bilateral symmetry nerve ganglia one opening flame cells hermaphroditic regeneration |
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roundworms
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nematoda
most numerous bilateral symmetry 2 digestive openings seperate sexes psuedocoelom ascaris hookworm filarial trichinella |
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earthworm
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annelida
segmented bodies advanced circulatory system true coelom 2 opening digestive system crop gizzard intestine nephridia brain parapodia hermaphroditic internal fertilization |
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snail
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mollusca
mantle nonsegmented 3 cell layers true coelom heart 2 opening syster gills kidneys radula exoskeleton |
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crayfish
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crustacea
mandibles 2 pair antannae 2 body segments cephalothorax 5 pair legs claws called chelipeds swimmerets telson exoskeleton |
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grasshopper
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insecta
3 body segments one pair antannae one pair mandables 3 pair legs 2 pair wings on thorax exoskeletons |
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spider
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arachnida
2 body sections no antannae chelicerae (no mandibles) 4 pair legs book lungs spinnerets on tip of abdomen exoskeletons |
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centipedes
millipedes |
chilopoda 1 pair appendages
dilopoda 2 pair appendages both have mandibles exoskeletons |
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starfish
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echinodermata
spiny skins endoskeleton bilateral then radial as adult 5 rays/arms coelom water vascular system dermal broncheae external feritilization sexual 2 opening digestive system |
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lamprey
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agnatha
jawless parasite uncovered gills fins ectothermic |
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sharks
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chondrichthyes
skeltons of cartilage ectothermic w/ scales 2 pair of fins hinged jaws, uncovered gills predators good sense of smell |
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bass
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osteichthyes
bony fish salt and freshwater bone skeletons, hinged jaws ectothermic 2 pair lateral fins 2 dorsal fins 1 tail ventral/anal fin scales w/ slimy coating sexual |
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frogs
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amphibia
first to live on land ectothermic sexual external fertilization lay eggs stages of development |
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snakes
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reptilia
sexual internal fertilization external development shelled eggs laterally located legs scaly skin-molting |
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hawk
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aves
scaly legs tough beak external development endothermic bone skeleton feathers auxiliary airs sacs to increase exchange rate |
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platypus
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monotremes
external development in shells mammalia endothermic lungs |
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kangaroo
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marsupials
partial internal and external development mammalia endothermic lungs |
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humans
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placental
young develop internally fed milk produced by mother endothermic lungs |
