science
Grade-4-
Easy
Question
Which statement best defines a “stimulus”?
- Something that causes a change in the environment.
- Process by which a plant grows in size.
- Process by which a new plant develops.
- A reaction to a change in the environment
Hint:
- We respond any situation when we detect and sense it.
The correct answer is: Something that causes a change in the environment.
Something that causes a change in the environment
- Stimulus is required to detect and respond anything.
- Stimulus can be something like any touch, sound, light etc.
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