Which of the following is an induced defense?
A) bright coloration of poison dart frogs
B) high-pitched alarm calls by a squirrel
C) background color matching by a chameleon
D) walking sticks resembling twigs
B
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The shape of the beaks of Darwin's finches and industrial melanism are often cited as examples of the process of _______________ leading to evolutionary change.
A. artificial selection B. coevolution C. intelligent design D. founder effect E. natural selection
Outside the CNS, groups of neuronal cell bodies that are clustered together to perform basic functions are known as
A. nerve nets. B. ganglia. C. nerves. D. spinal cords. E. somata.
A subordinate animal in a dominance hierarchy has limited access to food and mates. Why would he
remain in a social group that dominated him?
a. He is exhibiting altruistic behavior. b. His chances of survival and reproduction are better in the group than alone. c. He expects to become dominant in the future. d. He does not know that it would be an advantage for him to leave. e. Dominant group members will not allow him to leave.
Wings of birds and butterflies have similar functions, but different evolutionary origins. They are:
A. physiological structures. B. homologous structures. C. phylogenetic structures. D. analogous structures.