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10. PROTOSTOMADOS MENORES PHYLA: SIPUNCULA 320 spp. ECHIURA 135 spp. Forma, tama o, color, h bitat y forma de vida - Regiones del cuerpo, pared del cuerpo y ...
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Title: Phylum Sipuncula Author: Marine Tech Last modified by: Jason Rogers Created Date: 11/3/2000 2:58:42 AM Document presentation format: On-screen Show (4:3)
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Phylogeny of some lophotrochozoan worms Annelida Sibloglinidae Polychaeta Sipuncula Nemertea feeding structure coelomic cells
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... Most common in shallow water Unsegmented bodies up to 35 cm long Studded introvert used for locomotion Cryptic Burrow in sediments or hide in shelters Deposit ...
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... Class Polychaeta Class Oligochaeta Class Hirudinida Polychaeta is a paraphyletic class because ancestors of the clitellates arose from within it.
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groove or gutter on proboscis with cilia for feeding (& produce mucus to trap food) ... retractable anterior introvert with tentacles & mouth ...
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About 2000 species have been described. 9.1 Phylum Rotifera The beating of the cilia in the corona draws in plankton-containing water for food.
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Several small phyla of protostome coelomates include examples from superphyla ... the tube-dwelling vestimentiferan worms found at hydrothermal vent systems. ...
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Smaller Protostome Phyla Chapter 21 Small Coelomate Phyla Several small phyla of protostome coelomates include examples from superphyla Lophotrochozoa and Ecdysozoa ...
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The most primitive of all the phyla. Mesoderm is called parenchyma. Has no anus. Nerve system connected to brain. Primitive kidneys. ...
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increase in body size possible (follows from 1) storage area for organs, separates organs from gut ... http://sorrel.humboldt.edu/ ~els15/Zoo314.html ...
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Phylum Annelida: summary of characteristics
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Three major protostomous eucoelomate phyla Nine minor phyla to consider Problematic Phyla Mixture of characters Where to put them Did segmentation evolve once or many ...
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Nematoda. Free living and parasitic forms. Cosmopolitan/Ubiquitous ... Cosmopolitan. Annelida. Polychaeta. 10,000 species (mostly marine) ...
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KEY ANNELID FEATURES. segmentation, with segments clearly separated by septa ... metanephridia - excretion in annelids. from: Jan A. Pechenik (2000) Fig. 13.2 ...
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Document characteristics and life history strategies that facilitate survival and define phyla ... Pisces = Fish. Aquatic vertebrates bearing fins rather than ...
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By definition, in true coelom- mesentery. tissue connects organs to body cavity wall ... Also, by definition coelom is fluid-filled body. cavity, found in ...
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... conservation, reproduction, and sound management of biological resources in the shelf zone; the study of adaptations, ontogenesis, ...
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Title: Metal Ions in Biological Systems Author: jirka Last modified by: JIRKA KOZELKA Created Date: 10/31/2005 4:21:31 PM Document presentation format
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SISTEMA IMUNE DE INVERTEBRADOS IMUNOLOGIA Introdu o Sistemas imunes s o geralmente caracterizados por sua habilidade em distinguir entre c lulas, tecidos ou ...
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Mesozoa. Year. Number of species . Octocorallia. Year. Number of species . Pennatulacea. Year. Number of species . Actinaria. Year. Number of species . Antipatharia ...
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Central nervous system = simple brain (aggregation of nerve cells) ... These individuals were photographed on a reef near the island of Guam. 3 Groups of Flatworms ...
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Positions of Moon measured against instants of time based on star fixes; ... The difference between Universal and Dynamical Time is due to the frictional ...
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http://manandmollusc.net/advanced_introduction ... http://www.weichtiere.at/scaphopoda/haupt.html http://members.shaw.ca/bcshells/mollusca.html ...
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Biodiversity Research and DNA Barcoding in Korea
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Evolution in the Fossil Record and Molecular Clocks
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RESULTADOS DE LA VALORACIN ECONMICA DE LOS RECURSOS NATURALES DEL PARQUE NACIONAL COIBA MTODO DE TRA
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coelom. metanephridium. gas-permeable cuticle. contractile. bilateral. protonephridium. triploblastic ... ventral nerve cords, ganglia (central nervous system) ...
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