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5 Written questions

5 Matching questions

  1. corals
  2. mollusk
  3. marsupials
  4. nurse young
  5. circulatory system
  1. a -two or three-chambered heart
    -most have an open circulatory system(blood flows in open space); some, such as the octopus have a closed circulatory system(blood flows only in vessels)
  2. b -some have external shells, others do not
    -bilateral symmetry
    -digestive tract with two openings
    -all have a mantle
    muscular foot or tentacles
  3. c -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)
  4. d mammary glands; secrete milk which is rich in fats, sugars, protein, and vitamin
  5. e -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 Multiple choice questions

  1. tongue-like organ with rows of teeth that is used to drill, scrape, grate or cut food
    (ex) snails, octopuses
  2. -most species are ocean dwellers; some lie in freshwater or moist terrestrial environments
    -some attach themselves to the ocean floor, others are free swimming
  3. a mutualistic symbiotic relationship with photosynthetic, single-celled protists
    -produce oxygen/ food
  4. -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. -mammals need a lot of energy for heating, cooling, & locomotion
    -thus, large amounts of O2 are needed
    -Four-chambered heart

5 True/False questions

  1. Polyptube-shaped body and a mouth surrounded by tentacles.
    -only stage in hydras, corals (always colonial), and anemones (singular)


  2. four-chambered heartkeeps oxygenated blood seperate from deoxygenated blood--> provides good supply of O2


  3. 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


  4. asexual reproduction-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


  5. cud-chewing-cows, kangaroos etc
    -the portion of food that a ruminant returns from the first stomach to the mouth to chew a second time.