- Multiple choice. Choose the single best answer. Each question is worth 3 points.
- Which of the following is a member of the order Insectivora?
- Diheterothermy in bats is characterized by
- seasonal periods of obligate hibernation
- nightly periods of torpor
- regulating body temperature at one level during activity and another, lower level during roosting
- having a constant body temperature regardless of environmental temperatures or level of activity
- Which trait is unique to primates?
- stereoscopic vision
- convoluted neopallium
- opposable digits
- none of the above
- With what do members of the family Myrmecophagidae crush their food?
- shearing molars
- piercing canines
- pyloric portion of their stomachs
- ischial callosities
- The condition of having overlap between the fields of vision of the right and left eyes is called
- binocular vision
- stereoscopic vision
- both of the above
- none of the above
- Syndactyly in the family Bradypodidae is associated with
- saltatory locomotion
- an arboreal lifestyle
- a fossorial lifestyle
- Parental care in some species of the order Scandentia is notable because
- offspring are highly precocial and eat solid food from birth
- offspring are left unattended in a nest and nursed at 48 hour intervals
- offspring are carried in a marsupium
- mother and offspring communicate using stridulation
- The orders Xenarthra, Pholidota and Tubulidentata were once grouped together into the order Edentata because
- they all lack teeth as adults
- they all are arboreal
- some members of each taxon have epidermal scales
- some members of each taxon eat ants and termites
- Monogamy in the order Macroscelidea is characterized by
- close proximity between the male and female
- parental care provided by both parents
- territorial defense by both sexes
- all of the above
- Which has NOT been offered as an explanation for why bats hang upside-down while roosting?
- It is easier to take off into flight from an upside-down position.
- The leg bones are too fragile to support the bat's body weight when upright.
- The hip joints are reversed to enable the hind legs to control the uropatagium.
- All of the above have been proposed as explanations.
- A moist, glandular nose pad
- ischial callosity
- Which gliding mammal has a patagium that completely encloses the body (including front and hind digits, limbs and tail)?
- sugar glider
- flying squirrel
- The megachiroptera are characterized by
- daily periods of torpor
- reliance on echolocation for navigation and foraging
- worldwide distribution
- reliance on vision for navigation and foraging
- Matching. Match the taxomonic group with the most appropriate sensory system characteristics (8 points).
____ able to detect differences in air currents with eyes
____ one species able to detect electromagnetic fields
____ uses elongate finger for detecting insect prey
___ has heat sensing pits on nose
____ reduced sense of smell because of greater reliance on vision
____ has greatly enlarged auditory bullae and modifications of the ossicles to detect faint, low frequency sounds
____ uses audible clicks to detect cave opening
____ produces sounds by vibrating its spines (stridulation)
Match the morphological specializations with the form of locomotion (8 points).
a. true flight
b. suspensory locomotion and/or brachiation
c. saltatory locomotion
g. verticle clinging and leaping h. semibrachiation
____ elongation of the tarsal bone, muscular thighs, stereosc
____ keeled sternum, extreme elongation of the metacarpals and phalanges
____ jointed cranium
____ splayed limbs, broad forefeet, strong claws
____ dorso-ventrally flattened tail, valvular ears and nostrils
____ prehensile tail
____ curved digits
- Characterize the four phases of the population cycle in rodents of the subfamily Arvicolinae with respect to reproduction and population dynamics.
- Which animals within the order Insectivora are venomous (common name is okay)? Where is the venom produced, how is it delivered and why might these animals use it?
- Describe three anatomical specializations associated with feeding on ants or termites and name three mammals from different orders that show these traits (give common names and orders).
- How could you immediately identify the following groups based upon their skulls?
- What morphological specializations are associated with the following forms of primate locomotion?
vertical clinging and leaping
- Differentiate between CF and FM types of echolocation. In which kinds of situations is each favored (ie, what kinds of information can they provide)?
- Compare and contrast the dentition in the orders Rodentia and Lagomorpha. How do these features relate to dietary habits?
- Describe morphological specializations of bats that are nectar feeders. How have plants coevolved to accomodate pollination by bats?
- How do members of the family Castoridae protect their eyes, ears and lungs when submerged?