Unit 3 book question
Unit 3 book question BIO 218
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This 2 page Study Guide was uploaded by Starr walker on Sunday April 3, 2016. The Study Guide belongs to BIO 218 at Central Michigan University taught by David zanatta in Winter 2016. Since its upload, it has received 53 views. For similar materials see zoology in Biology at Central Michigan University.
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Date Created: 04/03/16
Unit 3 study guide Book questions: 1. A skeleton is a supportive structure. Explain how a hydrostatic skeleton supports an animal. 2. Explain the interactions of cuticle, body wall muscles and psuedocolomic fluid in the locomotion of nematode 3. Give the main distinguishing characteristics of onychophora and tardigrada. 4. some investigators regard onychophora as a “missing link” between annelida and arthropoda. Give evidence for and against this hypothesis. 5. how is hemocoel different from a true coelom? 6. In what sense is a hemocoel part of the circulatory system? 7. Describe two major protosome clades, and give a defining feature for each. 8.list some characteristics of arthropoda that clearly distinguish between them from annelida. 9. Name the subphyla of arthropods, and give a few examples of each. 10. much of the success of arthropods has been attributed to the cuticle. Why? describe some other factors that probably contributed to their success. 11. what is a Trilobrite? 12. what appendages characterize chelicerates? 13.People fear spiders and scorpions, but ticks and mites are far more important medically and economically. Why? Give examples. 14.the only venomous crustacean known is small blind cave-dwelling animal called a remipedian. Which other arthropods use venom? 15. define each of the following: swimmeret, maxilliped, cheliped, nauplius. 16.explain the mechanism of each of the following with respect to crustaceans: feeding, respiration, excretion, circulation, sensory reception, and reproduction. 17. Distinguish the following from each other: diplopoda, chilopoda, and insect. 18. what different modes of feeding do insects use, and how are these reflected in their mouthparts? 19. explain the difference between holometabolous and hemimetabolous metamorphosis in insects including the stages of each. 20. molecular sequence data indicate xenourbella is a dueterostome. Are there corresponding morphological characters? 21. What constellation of characteristics possessed by echinoderms were derived from an ancestor with bilateral symmetry? 22.What is an ambulacrum, and what is the difference between open and closed ambulacrum grooves? 23.Name the structures involved in the following functions in sea stars , brittle stars, sea urchins, sea cucumbers and crinoids, and briefly describe the action of each: respiratipn, feeding, digestion and reproduction. 24. Define the following: pedicellariae, madreporite, respiratory tree, Aristotle’s lantern, papulae and cuvierian tubules. 25.destinguish between enteropneusta from pterobranchia. 26. members of Hemichordata were once considered chordates. Why?
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