Unit 2 Key area 5 Flashcards
Explain the features of an organism that has entered dormancy?
During dormancy an organism has a decrease in:
- heart rate
- metabolic rate
- breathing rate
- body temperature
Define the term “dormancy”?
Dormancy refers to the period in an organism’s life cycle that allows the organism to survive adverse conditions where the costs of continued normal metabolic activity would be too high. Dormancy allows for the organism to decrease its metabolic rate amongst other things to save energy.
State the two types of dormancy?
- Predictive dormancy
- Consequential dormancy
Explain what is meant by predictive dormancy?
Predictive dormancy refers to dormancy occuring before the onset of adverse conditions.
Explain what is meant by consequential dormancy?
Consequential dormancy refers to dormancy occurring as a result of the onset of adverse conditions
State three distinct examples of dormancy?
- Hibernation
- Aestivation
- Daily torpor
What is meant by hibernation?
the process by which some animals survive winter/low temperatures, this is an example of predictive dormancy.
What is meant by Aestivation?
Aestivation is a form of consequential dormancy that allows organisms to survive during periods of high temperature or drought.
Explain Daily torpor?
Daily torpor is a period of reduced activity in some animals with high metabolic rates. This is another example of consequential dormancy
Define the term “migration”?
Migration refers to avoiding the onset of adverse conditions by “expending energy” to relocate to a more suitable environment.
What are the two types of migratory behavior?
Migratory behavior can be innate or learned
State two methods used to track migratory behavior of animals?
- leg rings
- Satellite tracking
