Respond to statements 61–65 in reference to the five kinds of

behavior listed below.
a. imprinting
b. sexual selection
c. learned behavior
d. defense behavior
e. altruism
M 61. The extreme variation in plumage observed among
the males of various species of ducks is thought to be
due to __________.
E 62. A garter snake learns to avoid dangerous or
unpalatable prey. This is an example of
__________.
E 63. If the young of precocial birds (e.g., chickens or
ducks) are continually shown a large moving object
during the first few days of their lives, they will
follow that object. This is an example of
__________.
M 64. The adult male who jumps overboard to save a
drowning niece is exhibiting __________.
M 65. A prairie dog makes a particular bark when it sights
an eagle. This is an example of __________.


Answers: 61. b, 62. c, 63. a, 64. e, 65. d

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