Mammalogy Fall 2013 - Exam 1
MULTIPLE CHOICE, SELECT THE BEST ANSWER. 2 points each
- Pelycosaurs and therapsids are examples of _____ groups
- The wings of a bird and a bat are __ structures; the bones in the wings
themselves are ___ strucures.
- The Australian Zoogeographic region contains which of the following
- Monotremes have a fossil record that includes which of the following
times and places
- Five pairs of sex chromosomes characterize
- Which of the following patterns breaks up the body pattern to hide
a predator from its prey or vice versa?
- A taxonomic key arranges organisms into/according to
- Semelparous refers to animals that
- List from most inclusive (largest) to least inclusive the seven
fundamental Linnean categories. (4 points)
- In the boxes in the map below,
- Label the six major biogeographic regions
for mammals (4 points).
- Draw the boundaries defining the regions (2
- Which has the highest degree of endemism for
mammals at the family level (2 points)
- Which two have the most number of families in
common? (2 points)
- The three drawings above represent teeth shown to you in lecture. From the
following list, label on the lines below the teeth what kind of synpapsid they
belong to (2 points each, 6 points total):
e. Stem mammal
f. Tribosphenic mammal
- How are each of the following mammalian characteristics related to
endothermy (4 points each, 20 points total)
a. Enucleated red blood cells
b. Diaphragm muscles
c. Turbinal bones in the nasal region
d. Sebaceous glands
- The skull above left is from a pelycosaur. The
skull above right is a therapsid. From what is visible in the pictures
What is the most mammal-like feature visible in the pelycosaur? (2 points)
b. How has the jaw musculature changed in the therapsid? (4 points)
- ANSWER ANY FOUR of the following questions.
[There is a picture associated with each of these quwstions] 6
points each ; 24 points total. I will only grade the first four answers!!!
What is the family of the animal below. Where is it found? What is the one-word
term that describes its specialized diet? What features/anatomical structures
does it possess for its specialized diet?
b. What is the family of the animal below. Where is it found?
Discuss the features/anatomical structures it possesses for its specialized
c. What is the family of
the species below? Where was it found? Why isn’t it found there anymore?
d. What is the family of the
species below? What are the most importan characteristics of this family? What
northern hemisphere mammal(s) are ecomorphs (occupy similar niches)?
e. What two characteristics of this mammal
indicate that it belongs to the Order of mammals as the kangaroo? (Hint: one has
to do with the teeth; the other with the hind feet) What northern hemisphere
mammal(s) are ecomorphs (occupy similar niches)?
- Answer Three and only three of the following (5 points each, 15
a. What is greatest environmental advantage to eating kangaroo
meat instead of beef?
b. Discuss the two most important function of the
trophoblast for reproduction in placental mammals.
c. What is the role of
the secondary palate in mammals?
d. What are the two most important causes of
the extirpation of the numbats from most of their former range. ? Be specific;
don’t just say humans or hunting or climate change, etc. What is being done to
reverse this decline?
e. Why are multituberculates of interest to
f. What can we observe in the jaw of newly born opossums that
is similar to what we see in the evolution of mammals from cynodonts?
- Answer ONE and only one of the following (10 points)
Describe the changes in jaw structure and hearing apparatus that accompanied the
evolutionary transition from pelycosaurs to mammals. What other major changes
were taking place during this transition from pelycosaur to mammal? What was the
advantage of each?
b. Why do kangaroos have an advantage over ecomorphs such
as deer during times of severe drought? Include a discussion of locomotion and