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13 Cards in this Set
- Front
- Back
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what evolutionary traits evolved on the tree of life that are in cnidarians and ctenohphores?
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1.diplobast(two tissues)
2.radial symmetry |
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what are some examples of cnidarians(5)and what are their dominant life stages and what kind of feeders are they?
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1.jellyfish/medsea/macroconivores
2.sea anenome/polyp/macroconivores 3.hydroids/polyp/microconivore 4.seapens/polyp/filter 5.coral/polyp |
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what is the defining characteristic of the cnidarians? what is in this characteristic that makes it harmful?
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-cnidocyte
-nematocyst |
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what is the stuff between the ectoderm and the endoderm? is it a tissue?
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-mesoglia
-a matrix not a tissue |
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what does it mean when the mesoglia is proteoglycan?
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-swells up when it gets wet cause all (-) charge
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name the life stages of the cnidarians
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mature poly->medusea->larea->lil polyp
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how does the cnidarians reproduce?
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by budding off or making small structures that go off on their own
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is the polyp stage sessile or mobile?
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sessile
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what are 2 examples of ctenophores? do they have cnidocyte?
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comb jellies and sea walnuts
-no |
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what do the ctenophores look like?
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they are not true jellyfish they havve rows of cilia on them and have two tenticles
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what kind of feeders are ctenophores? how do they eat?
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-planktivorous
-their tenticals are gluey and the plankton stick to them and then the tenticles are brought in |
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what is triploblast?where did it evolve?
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-triplobalst=3tissue layers
-after the cn and ct and before the acoelomorpha |
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describe the 3 tissue layers of the triploblastic tissue
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ectoderm=skin,epithilial tissue,nervous system
mesoderm=organs,circulation, much but not all muscles endoderm=gut lining |
