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5 Written questions

5 Matching questions

  1. sexual reproduction in cnidarians
  2. anthozoa
  3. cephalopods
  4. mantle
  5. food acquistion of mollusks
  1. a -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
  2. b -a thin membrane surrounding the internal organs that secretes the shell
  3. c -may be predators, grazers, or filter feeders
    -bivalves, such as clams, do not have radulas; they are filter feeders
  4. d -the corals and anemones
    -exhibit only the polyp body form
    -sea anemones live individually and may live for 100s of years
    -some tropical anemones may have a diameter greater than 1m
  5. e occurs only in one phase of the life cycle, usually the medusa stage (unless there is no medusa stage)

5 Multiple choice questions

  1. mammals that carry young inside the uterus until development is almost complete
  2. a mutualistic symbiotic relationship with photosynthetic, single-celled protists
    -produce oxygen/ food
  3. -most mollusks have gills-rich supply of blood/exchange of gases; land snails and slugs have primitive lungs
  4. -live in colonies of polyps usually in warm waters
    -secrete calcium carbonate (limestone) around soft bodies for protection-may eventually build coral reefs (hard corals)
  5. -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

5 True/False questions

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


  2. circulatory systemnephridia- organs that remove metabolic wastes


  3. 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.


  4. monotremes-a thin membrane surrounding the internal organs that secretes the shell


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