Etymology pore bearers Characterized by choanocytes collar cells Sponge larvae parenchymula Phylum Porifera Classification Asconoid BSU basic sponge unit simplest body type that consists of spongocoel opening to the exterior by means of the osculum Choanocytes line the inner wall of the spongocoel and move water through by flagella Syconoid demonstrate simple folding of body wall Walls external form walls of incurrent canals Choanocytes only occur in radial canals do not line spongocoel Leuconoid most complex body type Complex folding of body wall choanocytes found in flagellated chambers Organization Cellular level 4 main types Choanocyte filter feed create H2O currents become sperm Amoebocyte Archaeocyte totipotent phagocytosis become eggs Porocyte form donut shaped openings called prosopyles Pinacocyte outer protective layer Mesohyl like jello in b layers Embryonic Development N A Symmetry Asymmetrical most Amorphous No specific body shape Water Flow in Asoconoid Ostium spongocoel choanocytes osculum Water Flow in Syconoid Ostium incurrent canal prosopyle radial canal choanocytes apopyle spongocoel osculum Water Flow in Leuconoid Ostium incurrent canal prosopyle flagellated chamber choanocytes apopyle spongocoel osculum Skeleton Support Spicules geometric crystal structures SiO2 CaCO3 Spongin elastic protein Mesohyl acellular gelatinous medium Movement Locomotion Adults are sessile Digestion Feeding Diffusion Carnivorous sponges Velcro like spicules Excretory Diffusion Circulatory Respiratory Diffusion Reproduction Sexual Monoecious hermaphroditic Dioecious separate sexes Asexual budding fragmentation gemmules Phylum Cnidaria Hydras Jellyfish Sea anemones and Corals CLASS ANTHOZOA POLYPS ONLY Can be individuals anemones or colonial Symbiotic w zooxanthellae Ex sea pansies coral sea fans CLASS HYDROZA Thin umbrella w little mesoglea POLYP DOMINANT Many colonial w polymorphic zooids Ex Fire coral Portuguese man o war Fire Coral it s purple CLASS SCYPHOZOA MEDUSA DOMINANT Scalloped edge of umbrella contains Rhodopalia light detection balance Sexual Stages Planula Actinula Scyphistoma Strobila Ephyra Adult Ex Jellyfish Etymology nettle Cnidocytes stinging cells Classification Hydrozoa thin umbrella w little jelly polyp dominant many colonial w polymorphic zooids Scyphozoa medusa dominant scalloped edge of umbrella contains Rhodopalia light detection balance Sexual stages Planula larvae Actinula Scyphistoma Strobila Ephyra Adults Anthozoa polyps only can be individual anemones or colonial coral sea pansies sea fans symbiotic w zooxanthellae Organization Tissue level Diploblastic Epidermis outer layer Gastrodermis inner layer Mesoglea matrix Metagenesis Polyp polyploidy Mainly sessile Thin mesoglea Medusa medusoid Free swimming Thick mesoglea Polymorphism Pneumatophore floating Gastrozooid feeding Gonozooid reproduction Dactylozooid for protection Symmetry Radial Oral mouth Aboral other side Skeleton Support Mesoglea gelatinous medium Hydrostatic skeleton Movement Locomotion Muscle tissue Circular Longitudinal Sensory Nervous Nerve net Digestion Feeding Ingestion Gastrovascular cavity GVC Cnidocytes Cnidocytes Nematocysts an organelle that gets fired Excretory Osmoregulation Egestion of nitrogenous waste via mouth Diffusion Circulation Diffusion Respiration Diffusion Reproduction Sexual Monoecious Dioecious Asexual budding fragmentation pedal laceration Phylum Platyhelminthes CLASS TURBELLARIA Free living flatworm Carnivorous Glide on slime tails using epidermal cilia Extendible pharynx CLASS TREMATODA Parasitic flukes Modified epidermis for acidic environments Oral sucker for feeding Mostly reproductive organs Complex life cycles Leaf shaped CLASS CESTODA Parasitic tapeworms NO digestive system Resistant cuticle modified epidermis Scolex head Proglottids segments CLASS MONOGENEA External parasite Single host Usually on fish Simple life cycle Seldom cause serious damage to their host Etymology flatworm Symbiosis Mutualism Commensalism Parasitism 0 Successful Parasite Doesn t kill host prematurely Attachment suckers hooks rasping mouth Body shape long flat Reduced organs High fecundity Classification Turbellaria Free living Carnivorous Glid on slime tails using epidermal cilia Extendible pharynx feeding structure Trematoda Parasitic flukes Modified epidermis for acidic environment Oral sucker for feeding Mostly reproductive organs Complex life cycles Leaf shaped tree matodes Cestoda Parasitic tapeworms Usually in invertebrate intestines No digestive system Resistant cuticle modified epidermis Scolex HEAD Proglottids segments Monogenea External parasite Single host Usually on fish Simple life cycles Seldom cause serious damage to their host Organization Organ level Embryonic Development Triploblastic Endoderm digestive tract Ectoderm epidermis Mesoderm mesenchyme Acoelomate mesoderm fills blastocoels Symmetry Bilateral Dorsal top Ventral bottom Cephalization forming head Anterior front contains sense organs Posterior hind end Skeleton Support Mesenchyme Locomotion Circular Longitudinal Transverse Digestion Feeding Extracellular Incomplete digest system Free living or parasitic Excretory Osmoregulation Protonephridia Flame cells Circulation Diffusion Respiration Diffusion Sensory Nervous Nerve net Reproduction Sexual Monoecious penis fencing Dioecious Asexual fission Etymology unerring nereid Phylum Nemertea All the same as Platyhelminthes except the following Complete digestive system Sensory Nervous Nerve ladder Digestion Feeding Extracellular Proboscis in rhynchocoel Stylet firing Circulation Close circulatory system Walls contract Reproduction Asexual fragmentation and regeneration Phylum Nematoda Rotifera Bryozoa Etymology N thread R wheel bearing B moss animal Organization Organ level Embryonic development Triploblastic Endoderm digestive tract Ectoderm epidermis Mesoderm mesenchyme Symmetry Bilateral N eutely set number of cells Pseudocoelomates mesoderm lines one side of blastocoels Skeleton Hydrostatic skeleton N Cuticle B Operculum zooecium gelatinous chitin or calcium carbonate Movement Locomotion N Longitudinal R Circular longitudinal Corona ciliated crown Trunk tail B Circular longitudinal Larvae free swimming adults are sessile Sensory Nervous Cerebral ganglion N papillae dorsal ventral nerve cords R ocelli dorsal ventral nerve cords papillae B simple Digestion Feeding Complete w specialization N trilobed esophagus R corona concentrates food trophy grabs food mastax
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