BIS2C Sec A W09 Final KEY

BIS2C Sec A W09 Final KEY - Biological Sciences 2C Sinha...

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Biological  Sciences 2C- Sinha, Ward &  Rizzo Winter Quarter  2009 Final  Examination Please Read the Instructions First. Check your pages--there are 16 pages in this exam (including this page). You are  responsible for making sure that you have all the pages. This examination is worth 150 points. Please bubble in the 9 digits of your student ID number on your scantron. Bubble the number from the bottom of the scantron into the scantron num- ber box.  Mark Test  Form A. Calculators cannot be used on the test. True/Fal     s    e/Matching Questions—30 questions worth 2 points each: 60 points      total Multiple Choice Questions—30 questions worth 3 pts each: 90 points total 1.  Indicate your answers on the scantron sheet using a number 2 or a test scor- ing pencil.  Press  heavily, don’t stray out of the margins and completely erase any changed answers. 2.  If you think that a multiple choice question is ambiguous or confusing, use the “explanation sheet” at the end of the examination to explain the problem.  Put your name on this  sheet—we tear them off to read them! Bonus Questions-4 questions, worth 8 pts total You have 120 minutes to complete the exam. 1
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True/False (2 points each) Indicate whether the following statements are true or false. A for true, B for false. 1. All animals can be classified as either diploblastic or triploblastic depending upon the number of cell layers that develop in the embryo. 2. Cephalopods have the most advanced nervous system of any marine animal. 3. Single-lens image-forming eyes evolved three times in animals. 4. The most parsimonious tree for a given taxon-character matrix is the tree that requires the least amount of character state change. 5. If two taxa are sister groups then they must be of the same age. 6. The three largest orders of insects (Coleoptera, Hymenoptera, Lepidoptera) together account for about one quarter of the world’s described animal species. 7. Prototherians (echidnas, duck-billed platypus) are the sister group to the remaining mammals. 8. Because sponges are a paraphyletic group this provides more information about the ancestral character states of Metazoa than if sponges were monophyletic. 9. Recent molecular phylogenetic studies indicate that crustaceans, as traditionally defined, are paraphyletic. 10. Recent evidence suggests that the ratite birds (ostriches, rheas, emus, cassowaries and kiwis) form a clade but that they lost the ability to fly more than once. 11. The evolution of puffball or truffle-shaped fruiting bodies from a mushroom-shaped fruiting body is mostly likely an adaptation to dry conditions.
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