Dearolf BIOL 220. CLADE METAZOA CLADE EUMETAZOA CLADE BILTERIA CLADE PROTOSTOMIA CLADE LOPHOTROCHOZOA Phylum Ectoprocta

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1 CLADE LOPHOTROCHOZOA Phylum Ectoprocta Hickman Chapter 15 Some Evolutionary Experiments Phylum Ectoprocta (Bryozoa) Zooid Zoecium Lophophore Statoblasts Helpful website: Bryozoans possess a crown of tentacles covered with cilia called a: What is the term used to refer to the members of a bryozoan colony? The exoskeleton of a bryozoan is called a: Digestive System: Incomplete Complete Excretory System: Protonephridia Metanephridia Neither Examples include: ectoprocts, bryozoans, moss animals 1

2 CLADE LOPHOTROCHOZOA Phylum Annelida Hickman Chapter 17 Annelids Illustrate Metamerism Phylum Annelida, Including Pogonophorans (Siboglinids) and Echiurans Body Plans Pleistoannelida Errantia Figure 17.2 (page 366) Circulation and Respiration Reproduction and Development Excretion Representative Members of Errantia Clam Worms: Nereis Fireworms Representative Members of Sedentaria Tubeworms Family Siboglinidae (Pogonophorans) Hydrothermal vents (see lecture notes) Characteristics of Phylum Annelida (page 370) Clade Clitellata Oligochaetes Nutrition Circulation and Respiration Figure (page 375) Excretion Figure (page 376) Nervous System and Sense Organs Figure (page 377) Reproduction and Development Figure (page 378) Class Hirudinida: Leeches Figure (page 380) 2

3 What is the term used to refer to the liplike structure in annelids? Similarly, what is the term for the first true segment of annelids? The terminal portion of the body of an annelid that bears their anus is called the: Digestive System: Incomplete Complete Excretory System: Protonephridia Metanephridia Class Polychaeta Habitat(s) - circle the habitats in which polychaetes are found: Term for the paired appendages on most segments of polychaetes: Clitellum: Present Absent Setae: Few Many Head: Reduced Well-developed Many are: Euryhaline Stenohaline Polychaetes are: Monoecious Dioecious Possess larval form shared with some molluscs?: Yes No Circulatory System: Open Closed Examples include: tubeworms, fan worms, feather duster worms, Christmas tree worms, spaghetti worms, fireworms, parchment worms, clamworms, siboglinids, Nereis virens 3

4 Class Oligochaeta Habitat(s) - circle the habitats in which oligochaetes are found: Clitellum: Present Absent Setae: Few Many Head: Reduced Well-developed Oligochaetes are: Monoecious Dioecious Possess larval form shared with some molluscs?: Yes No Circulatory System: Open Closed Examples include: earthworms or night crawlers, tubifex worms, sludge worms, potworms, aquatic oligochaetes, Lumbricus terrestris, Pristina leidyi Class Hirudinea Habitat(s) - circle the habitats in which leeches are found: Leeches are: Laterally flattened Dorsoventrally flattened Clitellum: Present Absent Setae: Few Many Head: Reduced Well-developed Suckers: Present Absent Leeches are: Monoecious Dioecious Possess larval form shared with some molluscs?: Yes No 4

5 Circulatory System: Open Closed The coelom of leeches has been reduced to a system of spaces called: Examples include: medicinal leeches, giant Amazonian leeches, Haementeria ghilianii, leeches CLADE ECDYSOZOA Phylum Nematoda Hickman Chapter 18 A World of Nematodes Phylum Nematoda: Roundworms Figure 18.2 (page 388) Figure 18.3 (page 388) Figure 18.4 (page 389) Representative Nematode Parasites Phylum Nematomorpha Habitat(s) - circle the habitats in which nematodes are found: Digestive System: Incomplete Complete Vestigial Excretory System: Protonephridia Metanephridia Neither 5

6 Circulatory System: Open Closed Neither Epidermis: Cellular Syncytial The cuticle of nematodes is composed primarily of: Name for the process shared with arthropods: Muscles: Longitudinal Circular Diagonal Term for the process that extends from the cell body of a muscle cell to a nerve cord: Number of nerve cords: One Two Nematodes are: Monoecious Dioecious Possess larval form?: Yes No Examples include: Caenorhabditis elegans, soybean cyst nematodes, Ascaris lumbricoides, Ascaris, hookworms, Necator americanus, pinworms, trichina worms, Trichinella spiralis CLADE ECDYSOZOA Phylum Nematomorpha Habitat(s) - circle the habitats in which nematomorphs are found: 6

7 Digestive System: Incomplete Complete Vestigial Excretory System: Protonephridia Metanephridia Neither Circulatory System: Open Closed Neither Epidermis: Cellular Syncytial Muscles: Longitudinal Circular Diagonal Number of nerve cords: One Two Nematomorphs are: Monoecious Dioecious Possess larval form?: Yes No Examples include: nematomorphs, horsehair worms 7