RADIATA DIPLOBLASTS 2 germ layers no mesocoel mesoderm Porifera Parazoa Ctenophora Cnidaria Comb jellies Anthozoa basal sScyphozoan Hydrozoa Body Plan Symmetry Support Totipotent cells Mesohyl jelly like matrix Skeletal elts calcium carbonate Radially symmetrical or asymmetrical Mesenchyme mesoglea True tissues biradially symmetrical spherical oval No tissues collagen Spicules formed by Sclerocytes True tissues Elastic mesenchyme Locomotion Sessile Feeding and Digestion Circulation Pores and canals Filter feeders intracellular digestion Amoebocytes transport nutrients Aquiferous system ostia oscula choanocytes pinaderm choanoderm Diffusion One pair of tentacles retractile cilia Pelagic live in open ocean Ctenes comb like move back and forth Anal pores Colloblasts catch prey on tentacles mouth Extracellular digestion Tendency to form colonies 2 embryonic layers ectoderm entoderm Mesenchyme Radial symmetrical Mesoglea cellular Tentacles jet propulsion mesdusa Current polyp sedentary No anus Coeclenteron gastrovascular cavity Use cnidae stinger toxin or cilia tentacles None Excretion Diffusion Gas Exchange Diffusion Nervous System None Larvae Reproduction Anal pores Diffusion DiffsuionDiffusion Diffusion Diffusion can reconstitute themselves Not centralized nerve net Apical sense organs opposite of mouth statolith with 4 long cilia balancers Cydippid larva Asexual budding gemmules regeneration Monomorphic one body form Regeneration Nerve net possesses neurons Nematocyst ocelli statocyst rhopalium Cnidae stinger in cnidocyte Planula Dimorphic life cycle polyp medusa Medusa free swimming hydroid Sexual sequential hermaphrotism internal or external fertilization Hermaphroditic shed gametes into water fertilization cylindrical attached alternation of generations DEUTEROSTOMIA Echinodermata Hermichordata Chordata Body Plan Articulating plates Tripartite Symmetry Support Locomotion Feeding and Digestion Circulation Excretion Pentaramious radial symmetry Oral aboral axis Calcareous ossicles endoskeleton Ambulacral grooves inbetween podia Spines and tubercles ossicles Tube feet podia outer Crawl swim podia burrow muscles Gut usually complete Suspension scavengers Aristotle s lantern Blind sac stomach can be everted reduced anus Open circulatory system large coelom Diffusion Osmoregulation None Diffusion Osmoregulation Acorn worms Benthic solitary vermiform Differentiated regions Bilaterally symmetrical Muscular postanal tail Segmented body myomeres Bilaterally symmetrical 2 long Vessel s Middorsal midventral longit Ridges Cartilage replaced by a backbone Proboscis Muscular movements undulations of body Proboscis short and conical mucous Gut straight tube move by cilia Direct deposit suspension Pharyhgeal endostyle thyroid gland Complete gut Open circulatory system 2 long Vessels Pharyngeal gill slits Pharyngeal gill slits mucous covered Ventral heart vessels Incurrent oral siphon and excurrent Diffusion Gas Exchange Coelomocytes Diffusion Osmoregulation Nervous System Decentralized nerve ring Diffuse no cerebral ganglion Gills Through body wall epithelium Dorsal hollow nerve cord Neurocord collar Dorsal notochord Dorsal hollow nerve cord Larvae Larvae bilaterally symmetrical Tornaria larva Tornaria larva notochord and nerve net lost in adults tadpole Reproduction Sexual Diecious indirect dev Direct Dev Asexual regeneration fissiparitytiary Sexual diecious fert External Asexual regeneration budding Diecious hermaphroditic dorsal ganglia Metamorphosis PLATYZOA also considered to be in Lophotrochozoa a Rotifer Platyhelminthes Gastrotricha Acanthocephala Body Plan Regions Symmetry Support Locomotion Feeding and Digestion Circulation Excretion Gas Exchange Nervous System Triploblastic Acoelomate Bilaterally symmetrical Dorsoventrally flat Cephalized Cellular mesenchyme no mesoglea cilia Syncytial cells run together Ventral mucous gland cells Cilia mucous muscles cir long Diag subepidermal Parenchyma cells b w body wall gut No anus incomplete intestine Carnivorous scavengers some parasitic None Protonephridia Nephridiopore tubule terminal bulb flame bulb cilia None Pair of anterior ganglia near head 2 nerve cords Reproduction Hermaphroditic Blastocoelomate Blastocoelomate Interstitial Acoelomate Bilaterally symmetrical Dorsoventrally flat Head trunk foot Eutelic Bilateral symmetry Full body spines and cilia Ventral ciliary looping Long obliq circ muscles Layered cuticle layers fiber Cilia 2 toes with adhesive tubules Muscular pharynx ciliary current Feed on organic material Cuticle soft and epidermis Cicr and long Muscles Hydrostatic skeleton Tegument gelatinous Cilia on corona Anchor toes creep Some sessile adhesive disk Digestive tract ciliated Corona cilary suspension mastax Some have coronal spines Blastocoelomate Always parasitic in intestines Bilaterally symmetrical Vermiform Long circ Muscles in sheets Ligament sacs Tegument Attach to host intestine Vertebrate arthropod intermediate host life cycle Proboscis Lemnesci work of extrustion proboscis Parasitic Diffusion None osmoregulation Lacunar system Protonephridia Diffusion 1 pair Protonephridia None osmoregulation 1 pair of Protonephridia Diffusion Diffusion None osmoregulation Diffusion Cerebral ganglion connected to top of pharynx nerve cord Tactile receptors face Hermaphroditic Cerebral ganglia 2 major long nerves Chemosensory pits oceli oscellious Parthenogenesis Diecious Behavioral modification to host Parthenogenesis Direct development Few large eggs Males absent or reduced diecious Altern of gen envior fac summ Females ovarian balls Acanthor larvae LOPHOTROCHOZOA LOCOTROPHOZA Cycliophora Gnathostomulida protostome Annelida Entoprocta Nemertea Sip h uncula Acoelomate Vermiform interstitial Body Plan Regions Symmetry Irregular bilateral Bilateral symmetry Functionally radial Support Mesenchymal Adhesive disk attach to host Locomotion mouthparts of decapods Sup epidermal muscles mostly long Mesenchyme Cilia glide Mucous Feeding and Digestion Suspension feeders cilia u shaped gut cilia Jaw plates that scrape food in Incomplete GI tract Blastocoelomate Anus inside Blastocoelomate Thin cuticle Epidermal muscle band mesenchyme Calyxz cilated tent Dorsal attach stalk Suspension feeders Water goes t h tentacles Food trapped by lateral cilia True coelom eucoelomate Stay moist Bilaterally symm Metamerism serial homology Segm Cheate Segmental parapodia Burrowers peristalsis Complete GI Deposit feeders predators Closed circ System Respir