An animal whose body temperature tends to fluctuate with the external environment is an
A. thermophile.
B. mesophile.
C. amniote.
D. endotherm.
E. ectotherm.
Answer: E. ectotherm.
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Answer the following statements true (T) or false (F)
1.Teeth are mineralized structures for holding and breaking up food. 2.When cleaning up from lab, you are asked to place two intestinal tracts in the appropriate bins. You would put the shorter one in a bin marked "herbivore" and the longer one in a bin marked "carnivore." 3.An autotroph obtains the energy it needs to maintain homeostasis from the sun. 4.A heterotroph obtains the energy it needs to maintain homeostasis from the sun. 5.Endotherms need more energy than ectotherms since they must do more metabolic work to maintain body temperature.