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Chps 32_33 Quiz

front 1 Question 1 Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent? 1. Protostomes invade terrestrial environments. 2. Cambrian explosion occurs. 3. Deuterostomes invade terrestrial environments. 4. Vertebrates become top predators in the seas. a. 2 → 1 → 3 → 4 b. 2 → 4 → 3 → 1 c. 2 → 3 → 1 → 4 d. 2 → 1 → 4 → 3 e. 2 → 4 → 1 → 3	back 1 e.
front 2 Question 2 An adult animal that possesses bilateral symmetry is most certainly also a. triploblastic. b. highly cephalized. c. a deuterostome. d. eucoelomate.	back 2 a.
front 3 Question 3 Corals are most closely related to which group? a. jellies b. sponges c. barnacles d. freshwater hydras e. sea anemones	back 3 e.
front 4 Question 4 Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition by a. ingesting it. b. consuming living, rather than dead, prey. c. preying on animals. d. using enzymes to digest their food.	back 4 a.

front 5 Question 5 Which mollusc clade includes members that undergo embryonic torsion? a. bivalves b. cephalopods c. chitons d. gastropods	back 5 d.
front 6 Question 6 Which phylum is characterized by animals that have a segmented body? a. Arthropoda b. Mollusca c. Platyhelminthes d. Porifera e. Cnidaria	back 6 a.
front 7 Question 7 A land snail, a clam, and an octopus all share a. distinct cephalization. b. a mantle. c. embryonic torsion. d. gills. e. a radula.	back 7 b.
front 8 Question 8 Which of the following is a diploblastic phylum of aquatic predators? a. Annelida b. Arthropoda c. Echinodermata d. Mollusca e. Cnidaria	back 8 e.

front 9 Question 9 What distinguishes a coelomate animal from a pseudocoelomate animal is that coelomates a. have a complete digestive system with mouth and anus, whereas pseudocoelomates have a digestive tract with only one opening. b. have a gut that lacks suspension within the body cavity, whereas pseudocoelomates have mesenteries that hold the digestive system in place. c. have a body cavity completely lined by mesodermal tissue, whereas pseudocoelomates do not. d. have a body cavity, whereas pseudocoelomates have a solid body. e. contain tissues derived from mesoderm, whereas pseudocoelomates have no such tissue.	back 9 c.
front 10 Question 10 Acoelomates are characterized by a. a coelom that is not completely lined with mesoderm. b. a solid body without a cavity surrounding internal organs. c. the absence of a brain. d. the absence of mesoderm. e. deuterostome development.	back 10 b.
front 11 Question 11 Which of the following is (are) unique to animals? a. cells that have mitochondria b. the structural carbohydrate, chitin c. heterotrophy d. nervous conduction and muscular movement e. Two of these responses are correct.	back 11 d.
front 12 Question 12 The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of a. a body cavity. b. a circulatory system. c. mesoderm. d. a complete digestive tract. e. true tissues.	back 12 e.

front 13 Question 13 How many of the following are characteristics of arthropods? 1. protostome development 2. bilateral symmetry 3. a pseudocoelom 4. three embryonic germ layers 5. a closed circulatory system a. one of these b. two of these c. three of these d. four of these e. five of these	back 13 c.
front 14 Question 14 What distinguishes complete metamorphosis from incomplete metamorphosis in insects? a. the presence of sex organs in the adult, but not in earlier life stages b. the radically different appearance between adults and earlier life stages c. the presence of wings in the adult, but not in earlier life stages d. Three of these responses are correct. e. Two of these responses are correct.	back 14 b.
front 15 Question 15 The blastopore denotes the presence of an endoderm-lined cavity in the developing embryo, a cavity that is known as the a. germ layer. b. archenteron. c. blastula. d. coelom. e. blastocoel.	back 15 b.
front 16 Question 16 What do animals as diverse as corals and monkeys have in common? a. type of body symmetry b. degree of cephalization c. presence of Hox genes d. body cavity between body wall and digestive system e. number of embryonic tissue layers	back 16 c.

front 17 Question 17 Sponges are most accurately described as a. marine filter feeders. b. aquatic filter feeders. c. aquatic predators. d. freshwater scavengers. e. marine predators.	back 17 b.
front 18 Question 18 Which of the following is descriptive of protostomes? a. radial and determinate cleavage, blastopore becomes mouth b. spiral and indeterminate cleavage, blastopore becomes mouth c. spiral and determinate cleavage, blastopore becomes anus d. radial and determinate cleavage, blastopore becomes anus e. spiral and determinate cleavage, blastopore becomes mouth	back 18 e.
front 19 Question 19 Which of the following characteristics generally applies to protostome development? a. blastopore becomes the anus b. radial cleavage c. determinate cleavage d. archenteron absent e. diploblastic embryo	back 19 c.
front 20 Question 20 How many of the following are characteristics of at least some members of the phylum Cnidaria? 1. a gastrovascular cavity 2. a polyp stage 3. a medusa stage 4. cnidocytes 5. a pseudocoelom a. one of these b. two of these c. three of these d. four of these e. five of these	back 20 d.