Invertebrate Zoology

  1. Phylum Platyhelminthes
    1. General Characteristics
      1. Bilateral Symmetry
        1. Triploblastic Organization
          1. Acoelomate Condition
            1. Dorsoventrally Flattened Body
            2. Body Wall Structure
              1. Tegument
                1. Muscle Layers
                  1. Parenchyma
                  2. Organ Systems
                    1. Digestive System
                      1. Incomplete Gut
                        1. Pharynx Types
                          1. Gastrovascular Cavity
                          2. Excretory System
                            1. Protonephridia
                              1. Flame Cells
                                1. Nephridiopores
                                2. Nervous System
                                  1. Cerebral Ganglia
                                    1. Longitudinal Nerve Cords
                                      1. Sensory Structures
                                      2. Reproductive System
                                        1. Hermaphroditism
                                          1. Complex Reproductive Organs
                                        2. Reproduction and Development
                                          1. Asexual Reproduction
                                            1. Fission
                                              1. Regeneration
                                              2. Sexual Reproduction
                                                1. Life Cycles
                                                2. Classification
                                                  1. Class Turbellaria
                                                    1. Free-living Flatworms
                                                      1. Habitat Diversity
                                                      2. Class Trematoda
                                                        1. Digenetic Flukes
                                                          1. Parasitic Adaptations
                                                            1. Life Cycles
                                                            2. Class Monogenea
                                                              1. Ectoparasitic Flukes
                                                                1. Host Specificity
                                                                2. Class Cestoda
                                                                  1. Tapeworms
                                                                    1. Segmentation
                                                                      1. Parasitic Specializations
                                                                    2. Parasitology
                                                                      1. Host-Parasite Relationships
                                                                        1. Medical Importance
                                                                          1. Control Strategies

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                                                                        6. Phylum Ctenophora

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                                                                        8. Phylum Nematoda