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Plant responses (Plant Stimuli (physical, chemical), Plant Responses…
Plant responses
Plant Stimuli
physical
chemical
Plant Responses
Reversible
Nastic response
plant response that causes movement that is not dependent on the direction of the stimulus
example: the opening of leaves during the day and the closing of leaves at night to conserve heat
Irreversible
Tropism response
: a plant's growth response to an external stimulus
Gravitropism
: a plant's response to gravity.
Can be :
Negative : Away from the stimulus
Positive : towards the stimulus
Thigmotropism: growth in response to mechanical stimuli
Organisms
Objects
Wind
Phototropism
: towards the light.
Done by : Sara AlSaleh - Sarah AlSaif - Sara AlJarbou - Alyah AlRasheed 11A
A
response
is a change caused by internal or external stimuli.
