Chapter 33: Q.32 (page 946)
Describe one key environmental constraint for ectotherms and one for endotherms. Why are they limited by different factors?
Endotherms: constrained by the availability of food sources in the environment
Ectotherms : The temperature range in a geographic area limits ectotherms.
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The cell found in bone that makes the bone is called an ________.
a. osteoblast
b. osteocyte
c. osteoclast
d. osteon
When faced with a sudden drop in environmental temperature, an endothermic animal will:
a. experience a drop in its body temperature
b. wait to see if it goes lower
c. increase muscle activity to generate heat
d. add fur or fat to increase insulation
Although most animals are bilaterally symmetrical, a few exhibit radial symmetry. What is an advantage of radial symmetry?
a. It confuses predators.
b. It allows the animal to gather food from all sides.
c. It allows the animal to undergo rapid, purposeful movement in any direction.
d. It lets an animal use its dorsal surface to sense its environment.
Which of the following is not true about acclimatization?
a. Acclimatization allows animals to compensate for changes in their environment.
b. Acclimatization improves function in a new environment.
c. Acclimatization occurs when an animal tries to reestablish a homeostatic set point.
d. Acclimatization is passed on to offspring of acclimated individuals.
The pleural cavity is a part of which cavity?
a. dorsal cavity
b. thoracic cavity
c. abdominal cavity
d. pericardial cavity
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