Bio 172 Animal Diversity, Form and Function Exam Questions with Correct Answers

Bio 172: Animal Diversity, Form and Function Exam Questions with Correct Answers Features Used to Classify Animals3 Which of the following is not true of the coelom? A. It may be present in triploblastic organisms B. It is a cavity that often houses internal organs C. it is derived from mesoderm D. it is present in all animals E. it usually contains fluids - Correct Answer: D. it is present in all animals Animal Phylogeny Which of the following is true of the animal phylogenetic tree? A. Fossils provide the best source of information for determining the animal phlogenetic tree B. Major accepted clades of the animal phylogeny have remained constant over the past 50 years C. Future DNA evidence is likely to demonstrate that the Bilateria is the most primitive animal clade D. Eumetazoans iinclude more species than Metazoans E. As more DNA is sequenced and analyzed from more animals, future changes to major surviving clades of the animal phylogenetic tree become less likely - Correct Answer: E. As more DNA is sequenced and analyzed from more animals, future changes to major surviving clades of the animal phylogenetic tree become less likely Features Used to Classify Animals4 The presence of which of the following traits in the early developmental stages of an animal would NOT allow you to determine if the animal is a protostome or a deuterostome? A. radial cleavage B. presence of endoderm, mesoderm, and ectoderm C. coelom formed by splitting of the mesodermal mass D. anus forms from the blastopore E. the developmental fate of each embryonic cell is fully determined - Correct Answer: B. presence of endoderm, mesoderm, and ectoderm The Evolutionary History of the Animal Kingdom Which of the following is not play a major role in Earth's postCambrian animal evolution A. evolution among plants B. meteor strikes C. change in distance between the Earth and the sun D. shift in Earth's geography E. cataclysmic volcanic eruptions - Correct Answer: C. change in distance between the Earth and the sun The Evolutionary History of the Animal Kingdom Which of the following is true about animal evolutionary history? E the Cambrian explosion was caused by a rapid increase in Earth's atmospheric oxygen A. the Cambrian explosion led to the appearance of the Ediacaran biota B. the Cambrian explosion occurred around 100 million years ago C. several extant animal phyla fist appear in the fossil record from the Cambrian period D. many fossils dating from the Cambrian explosion represent species that survive today - Correct Answer: C. several extant animal phyla fist appear in the fossil record from the Cambrian period Features Used to Classify Animals Match the animal group with its type of symmetry A. bilateral symmetry B. radial symmetry C. rotational D. asymmetry - Correct Answer: 1: Ctenophora: C 2: Porifera: D 3: Nematoda: A 4: Adult Cnidaria: B Features of the Animal Kingdom Which of the following is not a monophyletic group of animals? A. Opisthokonta B. Bilateria C. Cnidaria D. Ctenophora E. Porifera - Correct Answer: A. Opisthokonta Features of the Animal Kingdom2 Which of the following is not typical of most animals? A. specialized tissues B. a stage of development called gastrulation C. possession of hox genes D. alternation of generations between diploid and haploid lifestages E. food obtained via heterotrophy - Correct Answer: D. alternation of generations between diploid and haploid lifestages Phylum Cnidaria4 Class Anthozoa A, includes a medusa stage A. are polyploid B. have nematocysts C. have three embryonic tissue layers (triploblastic) D. none of the above - Correct Answer: B. have nematocysts Phylum Cnidaria3 Which is true of a cnidarian's gastrovascular cavity? A. it is lined by tissue derived from ectoderm B. it is lined with cnidocytes C. it is present in medusae but not in polyps D. it does not play a role in circulation of oxygen E. it has just one opening (mouth = anus) - Correct Answer: E. it has just one opening (mouth = anus) Phylum Porifera2 Which of the following is not a component of a sponge? A. osculum B. mesohyl C. endoderm D. amoebocytes E. ostia - Correct Answer: C. endoderm Phylum Porifera2 Which of the following is not a component of a sponge? A. osculum B. mesohyl C. endoderm D. amoebocytes E. ostia - Correct Answer: C. endoderm Phylum Porifera3 Which type of sponge cell filters food? A. choanocyte B. pinacocyte C. amoebocytes D. phagocyte E. osteocyte - Correct Answer: A. choanocyte Phylum Porifera5 Which of the following is not a component of sponge reproduction? A. release of eggs into the water column B. transformation of choanocytes into sperm cells C. budding D. gemmules E. fragmentation - Correct Answer: A. release of eggs into the water column Phylum Porifera4 Which of the following would you expect to be associated with a bath sponge? A. class Calcarea B. class Hexactinellida C. an abundance of large siliceous spicules D. cellulose E. spongin - Correct Answer: E. spongin Phylum Cnidaria5 Animals belonging to class Scyphozoa A. have a bell that is square in cross section B. include the reef building corals C. lack mesoglea D. include the Portuguese man o' war E. none of the above - Correct Answer: E. none of the above Phylum Cnidaria Which of the following is not found in Cnidarians? A. planula larvae B. medusae C. cnidocytes D. mesoderm E. polyps - Correct Answer: D. mesoderm