Homeostasis Quiz

A fox spots a rabbit in a field. The fox begins to chase the rabbit, and the rabbit runs away. Which best describes the rabbit's behavior in response to the stimulus of being chased?

• It is a tropism.

• It is a fight-or-flight response.

• It is a response caused by hunger.

• It is a response caused by an internal stimulus.

What is homeostasis?

• changes in a species over time

• the response of an organism to a stimulus

• the ability of an organism to reproduce

• the balance in an organism's internal environment

Tags

NGSS.HS-LS1-3

An example of an internal stimulus is 

• thirst

• temperature

• light.

• noise

Which of these is an example of a plant responding to an internal stimulus?

• a leaf wilting because of lack of water

• the stem of a sunflower bending toward light

• a leaf closing when a bee brushes against it

• the roots of a tree growing downward, in the direction of gravity

Dina is relaxing by walking her dog on a warm, sunny afternoon. Dina feels sweaty, and she sees that her dog is panting. Which is the most likely stimulus causing these responses in both Dina and her dog?

• hunger

• high temperature

• thirst

• light from the sun

Tags

NGSS.MS-LS1-8

Check all that apply. Which of the following are examples of an organism maintaining homeostasis?

• Shivering when cold

• Sweating when hot

• Fever - an immune response when sick

• Vomiting - releases toxins and wastes

Define stimulus.

• Change in an organism’s environment that causes it to react.

• How the organism reacts to the stimulus.

Tags

NGSS.MS-LS1-8

Define response.

• Change in an organism’s environment that causes it to react.

• How the organism reacts to the stimulus.

Stimulus is like the "cause" and response is like...

• the cause

• the effect

• the reaction rate

• the response time

What are the two types of stimuli?

• External and internal stimuli

• External and intermediate stimuli

• Internal and extraterrestrial stimuli