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5 Written questions

5 Matching questions

  1. therapsids
  2. excretory system
  3. platypus
  4. gastrovascular activity
  5. scyphozoa
  1. a -reptiles with features of both reptiles & mammals
    -lower jaw & ear bones like reptiles
    -straight legs close to body like mammals
    -270-180 mya
    -Cenozoic Era: the "golden age of mammals"
  2. b nephridia- organs that remove metabolic wastes
  3. c -has a rubbery snout, webbed front feet, sharp claws for digging & burrowing in soil
  4. d where prey are digested
  5. e -the jellyfishes
    -medusa stage is dominant
    -have muscle-like cells in outer cell layer that contract, propelling animal in water
    -occur everywhere, from tropical waters to the Arctic

5 Multiple choice questions

  1. sheet of muscle seperating expands and contrasts the chest cavity
  2. mammals that carry young inside the uterus until development is almost complete
  3. -two-shelled mollusks
    -includes clams, oysters, scallops
    -most are marine, some live in freshwater
    -filter feeders*
    -no radula. only muscular feet.
  4. conducts nerve impulses from all parts of the body
  5. hollow muscular-organ in which offspring develop
    -survival advantage

5 True/False questions

  1. placenta-organ that provides food and O2 to and removes waste from developing fetus
    -disadvantage: fiddle alcohol syndrome
    *use of alcohol when pregnant can lead to permanent mental/physical problems


  2. gastropods-stomach-footed
    -most have a single shell (snails, conches, whelks, periwinkles, etc); slugs(protected by mucus) and nudibranchs(bright-colored) do not
    -shelled gastropods nay be herbivores, predators, or parasites
    -nudibranchs that feed on jellyfish incorporate the poisonous nematocysts into their own tissues


  3. spiny anteater-covered with sharp spines for defense
    -catches insects with a long, sticky tongue


  4. four-chambered heart-cows, kangaroos etc
    -the portion of food that a ruminant returns from the first stomach to the mouth to chew a second time.


  5. endothermic-mammals that reproduce by laying eggs
    -nurse young after hatching
    -found only in Australia, Tasmania, and New Guinea


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