Concept explainers
(a)
To classify:
‘A surge of epinephrine initiates a flight response in a gazelle’ as either a proximate or an ultimate cause of the behavior.
Concept introduction:
Animal behavior is a very broad topic that covers everything that is done by animals. It includes movement and other activities that are performed by the animals. It is such a topic that helps to connect the two streams ecology and animal physiology to a great extent. In an animal behavior, there is involvement, and connection of many physiological systems and connections among the endocrine, muscular, nervous, reproductive and many other organ systems.
(b)
To classify:
‘Turtle uses Earth’s magnetic field lines as guides during migration’ either as a proximate or an ultimate cause of the behavior and for all proximate causes. Also, speculate about a possible ultimate cause of the behavior.
Concept introduction:
Animal behavior is a very broad topic that covers everything that is done by animals. It includes movement and other activities that are performed by the animals. It is such a topic that helps to connect the two streams ecology and animal physiology to a great extent. In an animal behavior, there is involvement, and connection of many physiological systems and connections among the endocrine, muscular, nervous, reproductive and many other organ systems.
(c)
To classify:
The descriptions that ‘a small mammal ignores food sources that have low energy and that are difficult to obtain’ as either a proximate or an ultimate cause of the behavior and in case of proximate causes speculate about a possible ultimate cause of the behavior.
Concept introduction:
Animal behavior is a very broad topic that covers everything that is done by animals. It includes movement and other activities that are performed by the animals. It is such a topic that helps to connect the two streams ecology and animal physiology to a great extent. In an animal behavior, there is involvement, and connection of many physiological systems and connections among the endocrine, muscular, nervous, reproductive and many other organ systems.
(d)
To classify:
The descriptions in which ‘a bird distracts its predator near its nest, which increases the chance of survival of the nestlings’ as either an ultimate or a proximate cause of the behavior and for all proximate causes give a possible cause of the behavior.
Concept introduction:
Animal behavior is a very broad topic that covers everything that is done by animals. It includes movement and other activities that are performed by the animals. It is such a topic that helps to connect the two streams ecology and animal physiology to a great extent. In an animal behavior, there is involvement, and connection of many physiological systems and connections among the endocrine, muscular, nervous, reproductive and many other organ systems.

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Chapter 36 Solutions
BIOLOGY: CONCEPTS AND INVESTIGATIONS,
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