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5 Written questions

5 Matching questions

  1. gastrovascular activity
  2. diaphragm
  3. modified limbs
  4. four-chambered heart
  5. therapsids
  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 -adapted for food gathering and locomotion
    -mole's front limbs are powerful and short with large claws
    -bats--> elongated finger bones (support the flight membranes)
    -opposable thumb
    -flippers (dolphins-> once land dwellers)
    -webbed feet (platypus)
  3. c sheet of muscle seperating expands and contrasts the chest cavity
  4. d keeps oxygenated blood seperate from deoxygenated blood--> provides good supply of O2
  5. e where prey are digested

5 Multiple choice questions

  1. occurs only in one phase of the life cycle, usually the medusa stage (unless there is no medusa stage)
  2. -covered with sharp spines for defense
    -catches insects with a long, sticky tongue
  3. -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
  4. -most mollusks have gills-rich supply of blood/exchange of gases; land snails and slugs have primitive lungs
  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. nervous system-nerves and cerebral ganglia or a brain
    -most mollusks have paired eyes


  2. anthozoa-box jellies
    -have eyes
    -deadliest stinging organism on Earth= Sea Wasp


  3. Medusaumbrella-shaped body w/ tentacles hanging down


  4. circulatory system-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)


  5. nerve netconducts nerve impulses from all parts of the body


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