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ISU BIOL 211 - Practice Test Exam 2 Answers

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Handout Title: Exam 2 PracticeSupplemental InstructionIowa State UniversityLeader: Cody Course: Biology 211 (1)Instructor: Dr. SerbDate: 10/17/101. A radula is used by____ for_____.a. jellyfish:stinging b. starfish:moving c. plants:flowering d. mollusks:feeding2. If an animal is cephalized, it ___ a. has an odd number of chromosomes b. has radial symmetry. c. has head. d. has tentacles.3. Animals with a coelem are all ___. a. protostomes b. radially symmetrical c. triploblasticd. deuterostomes4. You discover a flagellated free-floating larvae while swimming near a coral reef. You capture one and put it in a salt-water aquarium and observe its development. Once it reaches adulthood you notice an osculum, choanocytes and amoebocytes within the body of the organism. You have a ___ in your aquarium.a. spongeb. clam c. jellyfish d. echinoderm5. Which of the following is NOT a trait shared by all chordates at some point in their lives?a. pharyngeal slits b. cephalization c. muscular post-anal tail d. dorsal hollow nerve cord e. notochord6. Which groups of animals have an amniotic egg? a. Amphibians, Reptiles, Mammals b. Amphibians and Reptiles c. Mammals, Tunicates, Birds d. Birds, Mammals, Reptiles7. Which of the following is NOT a characteristic of nematodes?a. They shed their cuticle as they grow.b. They are protostomes.c. They have a true coelem.d. They are extremely abundant in soil.Supplemental Instruction1060 Hixson-Lied Student Success Center v 294-6624 v www.si.iastate.edu8. Which of the following are characteristics of arthropods: 1-protostomedevelopment, 2-bilateral symmetry, 3- a pseudocoelom, 4-three embryonic germlayers, 5- a closed circulatory systema. 1 and 2b. 1, 2, and 4c. 2 and 3 d. 2, 3, and 59. Among the characteristics unique in animals isa. gastrulationb. multicellularity c. sexual reproduction d. heterotrophic nutrition10. The main difference between sponges and other animal phyla is based mainly on the absence versus the presence ofa. a body cavityb. a complete digestive tractc. a circulatory systemd. true tissues11. Acoelomates are characterized bya. the absence of a brainb. the absence of mesodermc. a solid body without a cavity surrounding internal organsd. deuterstome development12. Among the invertebrate phyla, phylum Arthropoda is unique in possessing members that havea. a cuticle.b. a ventral nerve cord.c. open circulation.d. wings.13. A shared derived characteristic for members of the arthropod subgroup that includes spiders would be the presence ofa. chelicerae.b. an open circulatory system.c. an exoskeleton.d. a cuticle.14. A terrestrial animal species is discovered with the following larval characteristics:exoskeleton, system of tubes for gas exchange, and modified segmentation. A knowledgeable zoologist should predict that its adults would also featurea. eight legs.b. an open circulatory system. c. a sessile lifestyle.d. two pairs of antennae.15. A land snail, a clam, and an octopus all sharea. a mantleb. a radulac. gillsd. distinct cephalization16. Which phylum is characterized by animals that have a segmented body?a. cnidariab. platyhelminthesc. arthropodad. mollusca 17. Why must a parasite produce a lot of offspring?a. because the probability of a single offspring getting into the final host is low.b. because there is no energetic cost to produce lots of offspring.c. because the probability of a single offspring getting into the final host is high.d. because it is easy for offspring to move through the environment 18. Which of the following combinations of phylum and description is incorrect?a. Echinodermata-bilateral symmetry as a larva, coelem present.b. Nematoda-roundworms, psuedocoelomate.c. Cnidaria-radial symmetry, polyp and medusa body forms.d. Platyhelminthes-flatworms, coelomates, gastrovascular cavity 19. What’s the difference between open and closed circulatory systems?20. How will you tell were the intermediate host and the final host are on a CDC life cycle diagram?21. What’s the difference between deuterostomes and


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ISU BIOL 211 - Practice Test Exam 2 Answers

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