Study

Vertebrates Part 3

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  • Why do birds have only one ovary and small gonads?
    to reduce body weight for flight
  • What are the three main living lineages of mammals?
    monotremes, marsupials, eutherians
  • Primates typically have:
    flat nails, forward-facing eyes, and grasping hands
  • What is an example of a flight adaptation in birds?
    hollow bones, lack of a urinary bladder, keratin bladder
  • A bird species is found to have large breast muscles, hollow bones, and a beak with no teeth. What function are these features most related to?
    flight
  • What structural adaptation in bird wings allows lift and thrust?
    asymmetrical feathers with hooks and barbs
  • What animal group has nostrils that open to the side and often have a prehensile tail?
    New World monkeys
  • What group of vertebrates has the most specialized and diverse teeth suited for different diets?
    mammals
  • What group includes flightless birds like emus and penguins?
    ratites
  • What feature of mammals contributes to parental care?
    mammary glands
  • What distinguishes Homo sapiens from other apes?
    bipedalism
  • What trait allows primates to perceive depth well?
    forward-looking eyes
  • What role do feather likely play in flightless birds like penguins?
    buoyancy and insulation
  • What group of mammals are fully aquatic?
    cetaceans
  • What characteristics is shared by ALL primates?
    five digits and flat nails
  • What feature helps mammals support high metabolic rates?
    efficient respiratory and circulatory systems
  • Birds maintain their body temperature through:
    endothermy
  • A newly disovered animal has the following traits: amniotic egg, keratin scales, and ectothermy. Which group does it most likely belong to?
    reptiles
  • Which part of the primate body has adapted for tool use and grasping?
    the forelimbs and opposable thumbs
  • A fossil shows an animal with differentiated teeth, fur impressions, and three middle ear bones. What can paleontologists conclude?
    it was a mammal