ANIMAL BEHAVIOR
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A child has a fever of 101
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A chipmunk runs from a predator.
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A dog pants on a hot day.
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A snake moves to a sunny rock to get warm.
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Detailed explanation-1: -Answer: The internal stimuli that cause such a response could be a bacteria or virus. If you consider the other like the chipmunk running and owl sleeping in a tree, those two are responses to predators, which are outside the body.
Detailed explanation-2: -Internal stimuli are factors located inside the body that are detected and cause a response. Examples of internal stimuli are oxygen levels, blood sugar and pH levels, water levels, and internal temperature. If any of these conditions are too high or too low, the body will respond in a way to get back to homeostasis.
Detailed explanation-3: -As with responses to external stimuli, plants rely on hormones to send signals within the plant in order to respond to internal stimuli. For example, some hormones signal a plant to expand its root system in response to lack of water or nutrients.
Detailed explanation-4: -Research in fever has been centred on the hypothesis that fever results from physiological processes that are set in motion by an external stimulus.