Stimulus and Response

Front

What is a stimulus?

Back

A stimulus is any change in the environment that can provoke a response from an organism.

Front

What is a response?

Back

A response is the reaction of an organism to a stimulus.

Front

What are internal stimuli?

Back

Internal stimuli are changes that occur within an organism, such as hunger or an infection.

Front

What are external stimuli?

Back

External stimuli are changes in the environment outside an organism, such as light, sound, or temperature.

Front

What is an example of an external stimulus?

Back

The sound of a bell ringing.

Front

What is an example of an internal stimulus?

Back

Feeling thirsty.

Front

How do plants respond to light?

Back

Plants grow towards the light source, a response known as phototropism.

Front

What is the response of humans to cold temperatures?

Back

Humans shiver to generate heat when they are cold.

Front

What is the response of humans to hot temperatures?

Back

Humans sweat to cool down when they are hot.

Front

What is phototropism?

Back

Phototropism is the growth of a plant towards light.