Which phylum has incomplete digestive tract
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Major Invertebrate Phyla
Phylum (includes) Notable Characteristics Example
Cnidaria (jellyfish, corals) radial symmetry, true tissues, incomplete digestive system jellyfish
Platyhelminthes (flatworms, tapeworms, flukes) cephalization, bilateral symmetry, mesoderm, complete digestive system flatworm
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Explanation:
Incomplete digestive systems only have one opening for food intake and waste removal. These systems are more primitive and exist in lower animal species, like jellyfish and sea sponges. Complete digestive systems are more complex and have a complete tube with separate openings for food and waste
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