Which example shows an organism that cannot reach homeostasis through internal changes?
Responses
A person gets a fever in response to a flu infection.
A person gets a fever in response to a flu infection. -
A lizard is cold, and it moves to a sunny rock to warm up.
A lizard is cold, and it moves to a sunny rock to warm up. -
A dog shivers when it is too cold.
A dog shivers when it is too cold.
A dog shivers when it is too cold.
To determine which example shows an organism that cannot reach homeostasis through internal changes, we need to understand what homeostasis and internal changes mean.
Homeostasis refers to the ability of an organism to maintain a stable internal environment, despite external changes. It involves regulating various physiological processes to keep conditions constant within a narrow range.
Internal changes refer to the adjustments made by an organism's body systems to maintain homeostasis. This can involve physiological processes such as sweating, shivering, or adjusting metabolic rate.
In the given responses, the first two examples involve internal changes. A person getting a fever in response to a flu infection is an internal change aimed at fighting off the infection and maintaining homeostasis. Similarly, a lizard moving to a sunny rock to warm up is also an example of an organism using internal changes to regulate its body temperature and achieve homeostasis.
On the other hand, the third example, "A dog shivers when it is too cold," does not involve internal changes. Shivering is a physical response, rather than an internal physiological adjustment. In this case, the dog does not have the mechanism to internally regulate its body temperature, and instead relies on external factors (like shivering or seeking warmth) to achieve homeostasis.
Therefore, the answer is that "A dog shivering when it is too cold" is the example that shows an organism that cannot reach homeostasis through internal changes.