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Hello students here in the given question we have to mention two important characteristics related to the invertebrate phylum.
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The keynote here is the important characteristics are the major characteristics related to the invertebrate phylae we have to mention in the given question answer.
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First one is peripheral.
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In poriferance we come across cohenocytes.
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Choyanocytes are the major important characteristic in the poriferance along with water canal system.
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Choyanocytes and water canals are the major characteristics of this phylam periphera.
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Nidaria, second phylam.
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Here we have nematosis, nematosis and polymorphs.
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Nematosis and polymaphs.
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These are the major important characteristics of nidaria.
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Then comes platyhelmentis where we have flattened, flattened dorsi ventrally.
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The body is flattened dorsi ventrally.
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And these are acilomates.
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A silomates...