Responding
A finger taps near a lizard. The lizard runs away at once.
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Step 1 of 4
- A lizard rests on a wall.
- A tap: the stimulus.
- It darts away: the response.
- A stimulus in. A response out.
The rule
A stimulus is something that happens nearby. It can be a touch, a sound or light.
The response is what the living thing does after a stimulus.
Plants respond too. A tulsi plant leans toward light from a window.