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30 Cards in this Set
- Front
- Back
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porifera
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no true tissue
sessile fileter feeders (intercellular digestion) no symmetry lack nerve & muscle cells ex: sponges |
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cnideria
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radial symmetry
endoderm + ecoderm present nerve net around mouth GVS (2 way digestion) stinging tentacles ex: jellyfish, coral |
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platyhelminthes (flatworms)
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bilateral symmetry
endoderm + ecoderm + mesoderm GVS branched cephalization ex: tapeworms |
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nematoda (round worms)
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bilateral symmetry
one way digestion nerve function throughout breath through diffusion (all characteristics of flatworms also) ex: eaphantiasis |
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annelida (segmented worms)
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bilateral symmetry
segmentation (allows for specialization of organs) primative brain closed circulatory system complete nervous system first true body cavity ex: leech, earthworm |
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mollusca
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4 parts: shell, foot, visceral mass, mantel
full digestive tract gills & lungs open circulatory system |
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gastropoda
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a mollusk
one shell scavengers ex: snail, slug |
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bivalve
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a mollusk
2 shells often used as index fossils ex: mussel, clam |
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cephalopoda
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most complex brain of mollusks
ex: squid, octopus |
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arthopoda
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jointed appendages
exoskeleton of chitin most successful phylum in terms of # one way digestion open circulatory system |
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diplopoda
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an arthopod
2 pairs of legs per segment ex: millipedes |
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chilopoda
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an arthopod
1pair of legs per segment ex: centipedes |
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arachnida
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an arthopod
cephalothorax/abdomen, 8 legs, no wings |
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crustacea
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an arthopod
cephalothorax/abdomen, gills |
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insecta
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an arthopod
largest class by # head thorax & abdomen eings 6 legs |
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echinodermata
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radial symmetry
endoskeleton water vascular system most similar to choradates nerve net open circulatory system ex: seastar, sand dollar |
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chordata
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bilateral symmetry
notochord nerve chord tail at some point pharyngeal slits ex: invertebrates (tunicate) and vertabrata |
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agnatha (jawless fish)
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a chordate
lack true jaw retain notochord through life lack paired fins ectothermic ex: hagfish |
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chondrichthyes (cartilaginous fish)
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a chordate
ectothermic 2 chambered heart lack swim bladder teeth/jaw ex: shark, ray |
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osteicthyes (bony fish)
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a chordate
ectothermic swim bladder teeth/jaw 2 chambered heart paired fins |
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amphibia
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a chordate
1st vertebrate to move to land dual life (aquatic and terrestrial) - larvae (gills), adult (lungs) ectothermic external fertilization (water needed) 3 chambered heart (for life on land) gas exchange through skin (moist skin) ex: toad, frog, salamander |
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reptillia
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a chordate
well adapted to land scales 3/4 chambered heart amniotic egg (keeps embryo from drying out on land) internal fertilization ectothermic lungs for gas exchange (kept moist within body) ex: turtles, lizard |
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aves
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a chordate
endothermic (can survive in colder conditions) 4 chambered heart adapted to flight: hollow bones, no teeth, smaller organs internal fertilization traits remaining from reptiles: scales on legs, amniotic egg feathers, wings ex: birds |
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mammalia
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a chordate
endothermic internal fertilization mammary glands 4 chambered heart hair parental care of young |
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monotremes
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a mammal
lay eggs ex: platypus, armadillo, spiny anteater) |
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marsupials
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a mammal
have a pouch to care for young (embryo born early then lives in pouch) ex: kangaroo, opossum, koala bear |
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placentals
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mammals
embryos fully matured in uterus (placenta used for nurishment) |
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fungi
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eukaryotic
multicellular (usually) heterotrophs cell walls of chitin absorb nutrients ex: mushrooms |
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plants
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eukaryotic
multicellular autotrophs - photosynthesis cell walls of cellulose |
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animals
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eukaryotic
multicellular heterotrophic lack cell walls internally digest nutrients |
