Chapter Quiz (See related pages) 1 Phylum Platyhelminthes are ________, meaning that they lack a body cavity(other than for digestion) and that their mesoderm is a solid mass of tissue. A) pseudocoelomate B) coelomate C) acoelomate D) eucoelomate 2 Phyla Platyhelminthes and Nematoda are triploblastic. A) True B) False 3 List two ways phylum Platyhelminthes are more complex that phylum Porifera. 4 What kind of symmetry do phyla Platyhelminthes and Nematoda have? 5 Many members of phylum Platyhelminthes are ________, meaning that individuals have both female and male organs. A) bisexual B) hermaphroditic C) parasitic D) parasexual 6 List the three classes of phylum Platyhelminthes. 7 Planaria feed by sucking food into a tubular ________ leading to the gastrovascular cavity. A) proglottid B) sucker C) scolex D) pharynx 8 A liver fluke is an ectoparasite. A) True B) False 9 Trematodes are covered by an acellular secretion that resists digestive enzymes and aids in respiration and absorbing nutrients called a ________ A) epidermis B) procuticle C) epicuticle D) proglottid 10 Differentiate between intermediate and definitive hosts. 11 Class Cestoda are the most specialized flatworms. A) True B) False 12 Tapeworms adhere to their hosts with a . 13 Tapeworms are made primarily of a series of segments called that contain female and male organs. 14 Phylum Nematoda are ________, meaning that they have a body cavity consisting of a fluid-filled space between the body wall and the digestive tract, which develops between the mesoderm and endoderm. A) pseudocoelomate B) coelomate C) acoelomate D) eucoelomate 15 Nematodes have two evolutionary advances over platyhelminthes, a body cavity and a complete digestive tract. A) True B) False 16 What is the genus of roundworms that you'll be dissecting? 17 Roundworms have circular muscles. A) True B) False
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