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CHAPTER 33 INVERTEBRATES Porifera Sponges Porifera Sponges Porifera Sponges-osculum, choanocytes-limits size of food particles , must fit into the collar; extra cellular and intracellular digestion amoebocytes, hermaphrodites, reaggregation, spongocoels Porifera Sponges Porifera Sponges Venus Flower Basket Sponge Porifera Sponges Porifera Sponges Spicules-skeletal components of sponges composed of calcium carbonate, silica, or a protein called spongin Porifera Sponges Cnidarians-hydra and jellyfish Cnidarians-hydra and jellyfish Cnidarians -hydra and jellyfish nerve net nonpolarized Polyp Medusa Cnidarians-hydra and jellyfish cnidocytes with nematocysts N e m a t o c y s t Cnidarians-colonial hydra Hydrozoans ectoderm, endoderm, radial symmetry, polyps, medusa, cnidocytes with nematocysts Cnidarians-jellyfish Scyphozoans Cnidariansjellyfish Cnidarians-sea anemone Anthozoans Cnidarians-sea anemone Anthozoans Cnidarians-sea anemone Anthozoans Cnidarians-Coral Anthozoans Cnidarians-corals Anthozoans Cnidarians-coral Hydorzoan CnidariansScyphozoans jellyfish Cnidarianshydra Colonial hydroid Cnidarianssea anemone Anthozoans Cnidarians-HydrozoanPortuguese Man-of-War Cnidarians-HydrozoansPortuguese Man-of-War Cnidarians-Hydrozoan-Portuguese Man-of-War Ctenophora-comb jellies-long tentacles, combs are rows of fused cilia, some are bioluminescent colloblasts-cells containing vacuoles with a sticky thread-like protein that burst open and captures food particles Ctenophora-comb jellies Ctenophora-comb jellies Ctenophora -comb jellies Ctenophoracomb jellies Ctenophora-comb jellies Fused cilia Ctenophora-comb jellies Protostomia Acoelomates Platehelminthes Pseudocoelomates Rotifers Nematoda-ecdysozoa Coelomates Lophophorates Nemertea Mollusca Annelida Arthropoda-ecdysozoa Deuterostomia Coelomates Echinodermata Platyhelminthes-flatworms Platyhelminthes-flatworms incomplete digestive system, flame cells water balance only, cephalization, nerves, internal fertilization Platyhelminthes-flatworms Life Cycle of a Blood Fluke triploblastic with mesoderm, acoelomic, incomplete digestive system, flame cells water balance only, cephalization, nerves, Platyhelminthes-flatworms-fluke Platyhelminthesflatwormstapeworm-Cestoidia Platyhelminthesflatwormstapeworm Platyhelminthes-flatwormstapeworm Platyhelminthes-flatworms- tapeworm Rotifers-have a pseudocoelom reproduce by parthenogenesis, crown of cilia for food capture pull food into mouth which has jaws, first complete digestive tract Rotifers Rotifers Rotifers Rotifers Lophophorateslophophore-food capture and gas exchange, embryonic development like a deuterostomes phoronid Lophophorates bryozoans Lophophorates Bryozoans Lophophorates brachiopods Lophophore Lophophorates Lophophorates Nemertea-ribbon worms First simple closed circulatory system, complete digestive system Nemertea-ribbon worms Nemertea-ribbon worms probosis worm Mollusca-foot, visceral mass, mantle, mantle cavity, radula Mollusca chiton Mollusca chiton Trochophore Larva Flame cell found in Platyhelminthes pulls in water and pumps it out with cilia no concentration of waste. Protonephridia found in Molluska several flame cells with some transport of good substances out of the tube loses lots of water little concentration of waste Protonephridia flame cell metanephridia Metanephridia take in coelomic fluid and reabsorb the nutrients and water which are then picked up by the associated blood vessels thus they concentrate the nitrogenous waste found in Annelids Mollusca gastropoda-torsionvascularized mantle cavity acts as crude lung Mollusca gastropoda torsionvascularized mantle cavity acts as crude lung Mollusca gastropoda Mollusca gastropoda-sea slug Mollusca gastropoda Mollusca gastropoda Mollusca gastropoda Mollusca Bivalvia Mollusca Bivalvia gills filter feeders open circulatory system loss of cephalization Mollusca Bivalvia Mollusca Bivalvia Mollusca Bivalvia Mollusca Cephalopoda-jet propulsion; closed circulatory system, well developed nervous system Mollusca Cephalopoda Mollusca Cephalopoda Mollusca Cephalopoda Mollusca Cephalopoda Mollusca Cephalopoda Mollusca Cephalopoda Mollusca Cephalopoda eggs of giant octopus Mollusca Cephalopoda Annelidasegmented wormsOligochaetaearthworms Annelidasegmented wormssegmentation, closed circulatory system, cerebral ganglia and nerve cords, metanephridia, Oligochaetaearthworms Annelida-segmented wormsPolychaete Polychaete Hirudineamarine bristle tube worm leeches worms Annelida-segmented worms- Annelida-segmented wormsRespiration Porifera->rotifera-Through body surface Lophophorates through tentacles w/ coelomic fluid Annelids through highly vascularized epidermis and parapodia Molusca through gills or vascularized mantle cavity Arachnida book lungs Insecta tracheal system Annelidasegmented wormsHirudinea Annelida-segmented worms-Oligochaeta Annelida-segmented worms Polychaeta Annelida-segmented worms-Hirudinea Annelida-segmented worms Annelida-segmented worms Annelida-segmented worms Nematodaroundworms a free-living type Nematoda-roundworms Parasitic nematode trichinosis form cysts in pork Nematoda Roundworms Nematoda Roundworms Nematoda Roundworms Nematoda Roundworms Nematoda Roundworms Nematoda Roundworms Nematoda Roundworms Loa-loa worm Arthropoda Trilobite Horseshoe crabs Arachnida Scorpion parasitic mites in a honey bee’s trachea Arthropoda Arachnida Arthropoda Arachnida Arachnida Arachnida Arachnida Arachnida Arachnida Arachnida Arachnida Arachnida Arachnida Chilopoda Chilopoda Chilopoda Diplopoda-millipedes Diplopoda Diplopoda Diplopoda Insecta Insecta Insecta-complete metamorphosis Insecta Insecta Incomplete Metamorphosis Complete Metamorphosis Crustacean Crustacean Crustacean barnacles Crustacea Crustacea Crustacea Echinodermata Echinodermata Echinodermata Echinodermata Echinodermata Echinodermata Echinodermata Regeneration Echinodermata sea cucumber
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