Stimulus and Response

Which of the following is an example of response to an internal stimulus?

• Having hunger pains and then getting a sandwich to eat

• Watching television commercial about chips and then getting a bag of chips to snack on

• Smelling cookies as they bake and then eating the warm cookies form the oven

• Seeing a cake on the kitchen table and then sneaking a slice of the cake

As the season turns from fall to winter, what is the most likely response that a wolf’s body has to the 

changing season?

• A.The wolf stores more fat to maintain body heat and provide nutrition when there may be less prey.

• B.The wolf produces less fur and sheds more fur to help the wolf move quickly to find shelter in the

   cold.

• C. The wolf produces more melanin causing the fur to be darker so that the pack can see other

   individuals easily.

• D.The wolf runs more and eats less food to maintain less body mass to keep warm throughout the 

  winter.

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NGSS.MS-LS2-1

A dog runs around outside in the heat. How will the dog most likely respond to the hot environment?

• A . The dog will start to pant.

• B. The dog's hair will stand straight up

• C. The dog's skin will grow goosebumps.

• D. The dog will begin to shiver.

When a coyote sees a deer in the woods and begins to run towards it, the deer takes off running. Which statement explains the deer’s response to the coyote?

• The deer is reacting to internal stimuli.

• The deer is in fight or flight mode.

• The deer is experiencing phototropism.

• The deer is experiencing geotropism.

Tags

NGSS.MS-LS2-4

What is a thing or event that causes a specific reaction?

• response

• stimulus

• cell

• development

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which is an example of a stimulus and the accompanying response of an organism?

• A wildebeest crosses a river during migration.

• An earthworm burrows into new, rich soil.

• A rat scurries past, and a python strikes at it.

• A hawk grabs a branch to gain a perch.

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NGSS.MS-LS1-8

A change in the environment is a ​ ​ (a)   , the way an organism reacts is a ​ (b)   .

• stimulus

• response

• cell

• spontaneous generation

• species

• homeostasis

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NGSS.MS-LS2-1

What are the two types of stimuli?

• Internal and External

• Learned and Instinct

• Internal and Instinct

• External and Learned

A student investigates how fear affects the fight-or-flight response by observing her friend as he watches a scary movie. Which best predicts how the friend will respond to fear?

• His heart rate will increase and his pupils will dilate.

• His heart rate will decrease and his pupils will dilate.

• His heart rate will increase and his pupils will constrict.

• His heart rate will decrease and his pupils will constrict.

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NGSS.HS-LS1-3

An animal that usually inactive is forced to move when its environment is destroyed by deforestation. How might the animal's body maintain balance with this increase in activity?

• The animal's body will require more energy to match the increase in activity, and its metabolism will increase.

• The animal's body will require more energy to match the increase in activity, and its metabolism will decrease.

• The animal's body will require less energy to match the increase in activity, and its metabolism will decrease

• The animal's body will require less energy to match the increase in activity, and its metabolism will increase.

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NGSS.MS-LS1-3

NGSS.MS-LS2-3