Free living platyhelminthes forms belong to the class
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An important character which platyhelminthes share with the acnidarians is
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Platyhelminthes are best described as
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The first invertebrates to develop a true nervous system are
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The most primitive invertebrate to possess musculo- epithelial cells and nerve cells is
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Sea anemone is
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Ascaris is characterized by
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Which group does not contain polyp?
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The canal system in sponges develops due to
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Phylum Porifera is classified based on
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