Mammalogy Fall 2007

1-5 MATCH THE CRITTER PICTURE with the name (2 points each)

  1. Macropodidae ____
  2. Pelycosaur ______
  3. Tachglossidae ______
  4. Notoryctidae _____
  5. Thylacosmilus ____

Multiple choice, Select the best answer. 2 points each

  1.  The taxonomic rank of the Amphicynodontinae is
  2. A group that a contains SOME, but not all, the descendants of a common ancestor is
  3. A nocturnal mammal is likely to have a well-developed
  4. Tribosphenic molars are characteristic of the earliest
  5. The use of color that allows a mammal to match its background is called
  6. The kangaroo digestive system is most similar to that of a
  7. The sampling technique where the start and end time of every behavior of an individual animal is noted is called
  8. Which of the following is not part of the Australian Zoogeographic province
  9. The South American Microbiothere Dromiciops, the "Monito del Monte" is of interest to mammalogsts because it is most closely related to
  1. Of the mammals, living and extinct, discussed for this test, give three ecomorphic pairs, and for each pair discuss why one is the ecomorph of the other. DO NOT USE KANGAROOS or REPEAT ANY INFORMATION from the multiple choice questions, if you do you will receive a 0 for that question (15a, b, and/or c). (4 points for each pair, 12 points total)
    1. ________________ is an ecomorph of _________________ because
    2. ________________ is an ecomorph of _________________ because
    3. ________________ is an ecomorph of _________________ because
  2. List from most inclusive to least inclusive the seven fundamental Linnean categories. (6 points)
  3. Label on the picture of hte skeleton of Thrinaxodon, three non-mammalian features. (3 points)
  4. Label on the skeleton, three mammalian features. (3 points)
  5. What two features would have to be present in this skeleton for Thrinaxodon to be classified as a mammal (2 points)
  6. List three [diagnostic] mammalian characters that are related to endothermy (3 points)
  7. Briefly explain how each of these three is related to endothermy (3 points)
  8. Answer TWO of the following (10 points each, 20 points total)
    1. Describe two methods from start to finish for determining the home range of a small mammal.
    2. What is the Biological Species definition? Why is it a useful definition? What if any drawbacks does it have?
    3. List and characterize three different types of Mesozoic mammals
    4. Which zoogeographic region has the highest percentage of endemic mammalian genera and species? Explain why. Which zoogeographic region has the lowest percentage of endemic mammalian genera and species? Explain why.
  9. Answer TWO of the following (10 points each, 20 points total)
    1. How does plate tectonics explain the present world-wide distribution of marsupials?
    2. Why do kangaroos have an advantage over ecomorphs such as deer during times of severe drought?
    3. What is semelparous reproduction? Under what conditions is it advantageous for a species to evolve semelparous reproduction?
    4. What is the trophoblast? What are its major functions? Why are these functions essential for reproduction in eutherians?
  10. EXTRA CREDIT: Characterize (information such as diagnostic characters, distribution, behavior, life history, dietary specializations, conservation issues) any family of living or extinct mammals that was covered in the material for this test. DO NOT repeat any information that was included in any previous question or answer or I will deduct points. (5 points)