Stimuli is the change in the environment. For example Change in temperature, light and gravity
The Receptor detects the Stimuli
The Receptor then sends the Stimuli to the Response
The plant responds differently to each stimuli for example if the stimuli is light then the it will respond as a phototropism if the stimuli is Gravity then it will respond as a Geotropism
Geotropism
Geotropism is the growth response to gravity
Phototropism
Phototropism is the growth responce to light. If the light is shining directly above the stem tip, the stem will grow upwards. But if the sunlight is shining from the side then the stem tim will bend towards the light.
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