bio 2

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Author:
lizzie
ID:
10683
Filename:
bio 2
Updated:
2010-03-15 19:24:49
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bio
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Description:
phylum
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  1. Porifera
    body plan
    symmetry
    layers
    phylogeny
    character
    habitata
    • sponge
    • none
    • 2 of loose unspecialized cells
    • 1
    • like a colony
    • h2O
  2. Cnideria
    body plan
    symmetry
    layers
    phylogeny
    character
    habitat
    • 1:sessile polyup, medusa
    • Radial-dipoblastic
    • 2
    • nematocysts-stinging cells, carnivorous
    • H20
  3. Platyhelminthes
    body plan
    symmetry
    layers
    phylogeny
    character
    habitat
    • 1:aceolomates
    • bilateral
    • 3 layers-tripoblastic
    • 3
    • flat, unsegmented worms
    • H20
    • planarians(turbellaria) blood flukes(trematoda) ext fish parasites(monogenea)
    • tapeworm(cestoda)
  4. Nematoda
    body plan
    symmetry
    layers
    phylogeny
    character
    habitat
    • 2: cylinder w/ tapered ends pseudoceolomates
    • bilateral
    • 3 layers
    • 4
    • round unsegmented worms
    • hookworm, heartworm,pinworm
  5. Annelida
    body plan
    symmetry
    layers
    phylogeny
    character
    habitat
    • ceolomates, complete digestive system
    • bilateral
    • 3 layers tripoblastic
    • 5
    • breathe across body surface, segmented worms, metanephridia excretion(liver)
    • H2O and land
  6. Mollusca
    body plan
    symmetry
    layers
    phylogeny
    character
    habitat
    • foot, viscelar mass, mantle: radula for feeding
    • bilateral
    • 3 layers
    • 6
    • soft unsegmented mantle Gastropoda(largest class, move by rippling along food)Bivalva(clams oysters musscles scallops, gills, suspension feeders) Cephalopoda(inteligent squid and octopus, closed circulatory system) Polyplacophora(chitons, rough external shell)
    • h20 and land
  7. Arthropoda
    body plan
    symmetry
    layers
    phylogeny
    character
    habitat
    • jointed appendages-allow for flight, hard exoskelaton
    • bilateral
    • 3 layers
    • 7
    • open circulatory system
    • Trilobites(extinct segmentation) Chelicerates(spiders scorpions ticks mites:book lugs cephalothora and abdomen) Diplopoda(millipeds 2/segment) Insecta(head, throax, abdomen, malphigian tubes) Incomplete:young look like old grasshoppers Complete:larvae diff from froomfly cacoon dif from moth
  8. Echinodermata
    body plan
    symmetry
    layers
    phylogeny
    character
    habitata
    • Deutrosomes
    • radial classified with bilateral
    • 3 layers
    • 8
    • spiny skin:starfish, sea stars, sand dollars, sea cucumbors
    • h2o
  9. Chordata
    body plan
    symmetry
    layers
    phylogeny
    character
    habitata
    • Deutrosomes, vertebraes
    • bilateral
    • 3 layers
    • 9
    • dorsal nerve cord
    • lands
  10. Protosomes
    • mouth forms first, 4 cells on top and bottom dont line up,
    • morula-spiral cleavage
    • fate is determined early-loose totipotentcy
    • ceolem-schizoceolos-splot ceolem
  11. Deutrosomes
    • echinoderms and chordates
    • radial cleavage
    • interminate cleavage
    • blastopore forms anus
    • ceolem begings formation as outpockets from gut-entero coelous

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