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Unformatted text preview: INVERTEBRATE DIVERSITY II-EXERCISE 8 REVIEW SHEET THIS CLASS: Three dissected specimens: clam, earthworm and squid External anatomy of three specimens: crayfish, grasshopper and spider Two Slides: cross section of an earthworm, snail radula GENERAL QUESTIONS-What are the characteristics of a protostome? Deuterostome? PROTOSTOME DEUTEROSTOME # OF GERM LAYERS DIPLOBASTIC (2) TRIPLOBLASTIC (3) COELOME TYPE SCHIZOCOELOUS ENTEROCOELOUS CLEAVAGE TYPE SPIRAL RADIAL TYPE OF DEVELOPMENT DETERMINATE INDETERMINATE FATE OF BLASTOPORE MOUTH ANUS-Which organisms that we studied are protostomes? Deuterostomes? Protostomes: Mollusca, Arthropoda, Annelida-What is spiral cleavage? Radial cleavage? Spiral- 8 celled embryo; cells form a spiral Radial- the daughter cells align above each other-What is a blastopore? What does it become in a protostome? Deuterostome? Blastopore-opening to the developing gut cavity of the gastrula Protostome-becomes a mouth Deuterostome-becomes an anus -What is indeterminate cleavage? Determinate cleavage? Determinate-fate of the embryonic cell is committed to a specific product Indeterminate-fate of embryonic cell is not fixed to a specific product-What is schizocoelous development? Enterocoelous development? Schizocoelous-splitting of embryonic mesoderm Enterocoelous- mesoderm out pocketing of the primitive gut-Which organisms that we studied in this lab are triploblastic? Diploblastic? Mollusca, Arthropoda, Annelida--->triploblastic Porifera and Cnidaria---> Diploblastic -What type of symmetry do the organisms that we studied in class have? Bilateral Symmetry- have a left a right side -All of the organisms that we are studying in the second half of the semester (exercises 7-13) belong to which domain? Which kingdom? Domain: Eukarya Kingdom: Animalia -Which organisms that we looked at in class are monoecious? Dioecious? Hermaphroditic? Most are dioecious; Annelida & Porifera: Hermaphroditic -What type of locomotion do the organisms that we looked at in class possess? (sessile?) NOT sessile Annelida: Parasites Mollusca: Jet-propulsion Arthropoda-legs (?)-What type of feeding do the organisms that we looked at in class utilize? (filter feeders? Use tentacles? Etc.) Annelida: use ciliated tentacles/Filter feeders? --- Mollusca: Filter feeders and scavengersAnnelida: use ciliated tentacles/Filter feeders?...
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