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5 Written questions

5 Matching questions

  1. respiration and circulation
  2. asexual reproduction
  3. marsupials
  4. bivalves
  5. placentals
  1. a mammals that carry young inside the uterus until development is almost complete
  2. b -mammals in which young have short period of development within uterus, followed by a second period of development within a pouch on outside of mother's body
    -mostly in Australia
  3. c -two-shelled mollusks
    -includes clams, oysters, scallops
    -most are marine, some live in freshwater
    -filter feeders*
    -no radula. only muscular feet.
  4. d -mammals need a lot of energy for heating, cooling, & locomotion
    -thus, large amounts of O2 are needed
    -Four-chambered heart
  5. e -may occur in either polyp or medusa stage
    -polyps reproduce asexually in a process known as budding

5 Multiple choice questions

  1. -cows, kangaroos etc
    -the portion of food that a ruminant returns from the first stomach to the mouth to chew a second time.
  2. -head-footed mollusks
    -all are marine
    -includes squid, octopus, cuttlefish, and chambered nautilus
    -like bivalves, have siphons that expel water--jet propulsion
    -have tentacles for capturing prey, beak-like jaws, radula
  3. -box jellies
    -have eyes
    -deadliest stinging organism on Earth= Sea Wasp
  4. conducts nerve impulses from all parts of the body
  5. tube-shaped body and a mouth surrounded by tentacles.
    -only stage in hydras, corals (always colonial), and anemones (singular)

5 True/False questions

  1. circulatory systemnephridia- organs that remove metabolic wastes


  2. nervous system-nerves and cerebral ganglia or a brain
    -most mollusks have paired eyes


  3. uterushollow muscular-organ in which offspring develop
    -survival advantage


  4. sexual reproduction in cnidarians-may occur in either polyp or medusa stage
    -polyps reproduce asexually in a process known as budding


  5. Hydrozoa-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


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