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Intro to Bio 2 > W9 Animal Phylogeny > Flashcards

W9 Animal Phylogeny Flashcards

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Biology 101 flashcards
1
Q

metazoa

A

animals

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2
Q

metazoa categories

A

porifera
ctenophora
placozoa
bilateria
cnidaria

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3
Q

bilateria classfications

A

xenacoelomorpha
deuterostomia
protostomia

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4
Q

protostomia classifications

A

lophotrochozoa
ecdysozoa

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5
Q

porifera bg (where, skeletons, what)

A
  • marine and freshwater
  • sponge skeletons - CaCO3 or Silica, SiO2
  • no multicellular tissues or organs
  • cells are connected by an extracellular matrix of protein and skeletal elements
  • most cells can change their identities
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6
Q

ctenophora

A
  • marine
  • sponge skeletons - CaCO3 or Silica, SiO2
  • two tissue layers with mesoglea gel in btw
  • muselces, nerves, through gut
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7
Q

placozoa

A
  • marine
  • tiny but mysterious
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8
Q

bilateria

A
  • marine, freshwater, and terrestrial
  • three body axes: front, back; top, bottom; left, right
  • three tissue layers: endoderm, mesoderm, ectoderm
  • cleavage division X change in size –> blastocoel –> gastrulation –> blastopore
  • complex traits can be gained or lost
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9
Q

blastopore –> mouth

A

protostomia

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10
Q

blastopore –> anus

A

deuterostomia

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11
Q

xenacoelomorpha

A
  • do not have a true gut
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12
Q

deuterostomia

A

echinoderm, hemichordata, chordate
vertebrate skeleton
echinoderm skeleton

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13
Q

echinoderm

A

marine invertebrates with tube feet and five-part radially symmetrical bodies

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14
Q

hemichordata

A

sister group of the echinoderm

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15
Q

chordate

A

any animal that has a spinal column

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16
Q

lophotrochozoa

A
  • usually lophophore feeding ring or trochophore larva
  • mussel shell - CaCO3
  • annelid bristles - Chitin
17
Q

ecodysozoa

A
  • insects
  • segments, jointed limbs
  • exoskeleton
  • arthropod exoskeleton CaCO3 and Chitin
  • nematode exoskeleton - collagen and chitin
  • no motile cilia
  • internal fertilization
18
Q

cnidaria

A
  • marine, freshwater, one lineage of terrestrial parasites
  • coral skeletons - CaCO3
  • two tissue layers and a manus
  • predators and algae-farmers
  • epidermis includes muscle cells, neurons, and cnidocytes
  • gastrodermis includes muscle cells and digestive cells
  • colonial animals
19
Q

cnidocytes

A

stinging cell

20
Q

cnidaria - colonial animals

A

increase area while maintaining proportions for each body
specialize and divide up roles

Intro to Bio 2 (5 decks)

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