Adaptation vs. Acclimation
A poikilotherm is:
A) An ectotherm
B) An endotherm
C) An animal whose internal temperature varies considerably, usually in connection to the ambient environmental temperature
D) An animal that can function at very low temperatures
If placed in a hypertonic solution cells will ___
C) Neither shrink nor swell
D) release sodium
Most plants are ___________.
A) Homeothermic endotherms
B) Homeothermic ectotherms
C) Poikilothermic endotherms
D) Poikilothermic ectotherms
Which of the following does NOT characterize salmon in freshwater?
A) Bodies absorb water because the environment is hypotonic.
B) Gills excrete a lot of salts.
C) Fish drink little water.
D) Fish have very dilute urine.
A(n) ___________ marine fish gains water through osmosis and loses salts through diffusion.
E) None of the above
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