15. Animal Ecophysiology

Question 1

An organism that maintains its body temperature at a constant level, usually above that of the environment, by its metabolic activity

Answer 1

Homeotherm

Question 2

An organism which lacks physiological means to deviate from environmental temp (they use behavioural means) [ex. reptiles, amphibians, fish, invertebrates] - their temp fluctuates

Answer 2

Poikilotherm

Question 3

Bergmann’s Rule

Answer 3

Homeotherms tend to be larger at higher latitudes (colder)

Question 4

Allen’s rule

Answer 4

Homeotherms tend to have smaller appendages at higher, colder latitudes

Question 5

Parallel pipes of flowing fluid in opposite directions in order to save heat

Answer 5

Countercurrent circulation

Question 6

Ability of an organism or environment to maintain stability in spite of changes

Answer 6

Homeostasis