2.5 - metabolism and adverse conditions

Cards (18)

  • What are 2 adaptation strategies for organisms to deal with adverse conditions?
    • dormancy
    • migration
  • What are the 2 types of dormancy?
    • predictive
    • consequential
  • Dormancy is used to survive adverse conditions whereas migration is used to avoid adverse conditions
  • During dormancy there is a decrease in:
    • Metabolic rate
    • heart rate
    • breathing rate
    • body temperature
  • Advantage of consequential dormancy?
    organisms are active and utilising resources for longer
  • Disadvantage of consequential dormancy?
    if organisms cannot enter dormancy after onset of adverse conditions, death is likely
  • What is predictive dormancy?
    occurs before the onset of adverse conditions
  • What is consequential dormancy?
    occurs after the onset of adverse conditions
  • What are 3 common examples of dormancy?
    • hibernation (winter sleep)
    • aestivation (summer sleep)
    • daily torpor (power nap)
  • Define hibernation?
    dormancy brought about by low temperature
  • Define aestivation?
    dormancy brought about by high temperature
  • Define daily torpor?
    daily period of dormancy for organisms with high metabolic rates
  • how does migration avoid metabolic adversity?
    Expending energy to relocate to a more suitable environment. Often long distance movement on a seasonal basis
  • What are the 2 types of migration?
    • innate
    • learned
  • What is innate behaviour?
    inherited and inflexible
  • What is learned behaviour?
    gained by experience and flexible
  • What are 3 external signs of migration?
    • decreased day length
    • decreased air temperature
    • Change in air pressure
  • How can migration be tracked?
    • individual marking
    • tracking devices