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Classification Organization Development Symmetry Organ/Organ System Triploblastic Bilateral -Nematoda -Nematoda -NematodaSee page 4 -Arthorpoda -Arthorpoda -Arthropoda -Echinodermata -Echinodermata-Chordata (excludes Urochordata) -Chordata -Chordata Pentaradial Deuterostomes -Echinodermata -Echinodermata -Larvae=bilateral -Chordata -Holothuroidea= secondarily bilateral Protostomes -Arthropoda -Nematoda Eucoelomates -Arthropoda -Echinodermata Pseudocoelomates -Nematoda -Bryozoa -RotiferaSkeleton/Support Movement Sensory/Nervous Digestion/Feeding Hydrostatic Skeleton Pseudocoelomates Pseudocoelomates Comlete Digestive System-Nematoda-Bryozoa and Rotifera=circular and longitudinal muscles-Bryozoa=simple nervous system -Arthropoda -Rotifera and Nematoda= bilobed gangila (the "brain")-EchinodermataExoskeleton -Larvae are free swimming -Have 2 stomachs: cardiac (eversible) and pyloric (connects cardiac to rest of digestive system)-Arthropoda -Adults are sessile -Both have papillae (dermal projections)-Echinodermata (dermal exoskeleton)-Nematoda=only longitudinal muscles -Only Rotifera have ocelli (simple eyes)-Chordata -Move with whip-like motions Endoskeleton Pseudocoelomates-Chordata Arthropoda Arthropoda Bryozoa=U-shaped gut -Bone, carilage, or other -Paired, jointed appendages -Central nervous system -Axial skeleton (vertebae) and appendicular skeleton (girdles and limbs)-One pair/segment -Ganglion w/ventral nerve cord -Wings -Abdominal flexion Echinodermata -Nerve ring w/radial nerves in ambulacral ridge Echinodermata -Water Vascular System -Ocelli on arms -Tube Feet -Chemosensory feet -Arms in Crinoidea Chordata Chordata -Dorsal hollow nerve cord -Complex muscle interactions-Complex array of sensory systems -Movement by undulation orlimbs is common Excretory Circulation Respiration Reproduction Pseudocoelomates Diffusion Psuedocoelomates Dioecious-Bryozoa=diffusion -Pseudocoelomates -Diffusion -Nematoda-Rotifera=protonephridia -Arthropoda-Nematoda=Renette glands (no cilia)Open Circulatory System Arthropoda -Have paired reproductive organs-Arthropoda-Chelicerata=book gills (water) and book lungs (land) -Have larval stage and metamorphosis Arthropoda Closed Circulatory System -Insecta=Tracheae -Echinodermata-Very Diverse -Chordata-Crustacea=gills on land except for terrestrial isopods which have psuedotracheae-Chordata -Have hemoglobin -OviparousEchinodermata -2 to 4 chambered heart -Ovoviparous-Water vascular system -Viviparous -Excretes waste across walls of papulae (pockets of epidermis)Water Vascular System Echinodermata -External or internal-Echinodermata -Papulae -Have no osmoregulation -Tube feet Monecious -Water Vascular System -BryozoaChordata -Holothuroidea also use arms -Asexual stratoblasts-Nephridia -Kidneys Chordata Amitic/Mitic -Gills -Rotifera -Lungs -Encysted eggs -Skin -Air bladdersClassificationPseudocoelomates• Superphylum Lophotrophozoao Phylum Bryozoao Phylum Rotifera• Superphylum Ecdysozoao Phylum NematodaPhylum Echinodermata• Class Asteroidea (sea stars/starfish)• Class Echinodeea (sea urchins, sand dollars, sea biscuits)• Class Ophiuroidea (brittle stars and basket stars)• Class Holothuroidea (sea cucumbers)• Class Crinoidea (sea lilies and feather stars)Phylum Chordata• Subphylum Urochordata (tunicates, ascidians, sea squirts)• Subphylum Cephalochordata (lancelets)• Subphylum Vertebratao Superclass Agnatha (jawless fishes) Class Myxini (Hagfish)o Class Osteichthyes (bony fishes)o Class Chondrichthyes (cartilaginous fishes; sharks, skates, rays)Phylum Arthropoda• Subphylum Trilobitmorpha (trilobites)• Subphylum Cheliceratao Class Merostomata Order Xiphosura (horseshoe crabs)o Class Pycnogonida (sea spiders)o Class Arachnida Order Acari (mites, ticks) Order Aranease (spiders, scorpions)• Subphylum Crustaceao Class Branchiopoda (fairy shrimp)o Class Ostracoda (seed shrimp)o Class Malacostraca Order Isopoda (isopods) Order Decapoda (crabs, shrimps, lobsters, crayfish)o Class Cirripedia (barnacles)• Subphylum Myriapodao Class Chilopoda (centipedes)o Class Diplopoda (millipedes)• Subphylum Hexapodao Class Insecta Subclass Pterygota• Division Exopterygotao Order Orthoptera (crickets, locusts)o Order Isoptera (termites)o Order Odonata (dragonflies)o Order Hemiptera (“true” bugs)o Order Homoptera (leafhoppers, cicadas)• Division Endopterygotao Order Coleoptera (beetles)o Order Lepiodoptera (“scaled wings;” butterflies, moths)o Order Hymenoptera (“married wings;” bees, wasps, ants)o Order Diptera (“two wings;” flies,

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FSU BSC 2011L - Study Guide

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