Monday, 28 March 2011

2.79 plants and stimuli

Stimuli - changes in the environment
e.g. temperature, light, gravity changes

Receptor - can detect stimuli
therefore making a response

Response
- growth
i.e. tropism - growth in response to stimulus
phototropism - tropism that involves light
geotropism - tropism in response to gravity

Connection between receptor and response - plant hormones (or plant growth regulators - e.g. Auxin)


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