Question

8.

1. a giraffe uses its long neck to eat from the high branches of a tree.
2. is another name for “living thing.”
3. which of the following is a stimulus, which is a response?

\ta) the recess bell ringing in an elementary school
\tb) your mouth watering at the sight of food on a plate
\tc) a sudden drop in air temperature
\td) a flu virus entering your body
\te) getting “butterflies” in your stomach before giving a speech.

Explanation:

1. Homeostasis is the process by which the body maintains a stable internal environment, such as a constant body - temperature.
2. Adaptation is a characteristic that helps an organism survive and reproduce in its environment. A giraffe's long neck is an adaptation for reaching high - branch food.
3. Organism is another name for a living thing.
4. A stimulus is a change in the environment that causes a response. a) The recess bell ringing is a stimulus as it causes students to respond (e.g., stop what they are doing and go out for recess). c) A sudden drop in air temperature is a stimulus that can cause the body to respond (e.g., shivering). d) A flu virus entering the body is a stimulus that can trigger the immune system's response. b) Your mouth watering at the sight of food is a response to the visual stimulus of food. e) Getting "butterflies" in your stomach before giving a speech is a response to the psychological stress (stimulus) of public speaking.

Answer:

1. Homeostasis
2. Adaptation
3. Organism
4. Stimuli: a), c), d); Responses: b), e)