33-2 Plant Movements

8 terms by chattterboxxx

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tropism

a plant movement that is determined by the direction of an environmental stimulus

phototropism

a plant movement respond to light coming from one direction

thigmotropish

a plant's growth response to touch a solid object (tendrils/veins touching an object)

gravitism

a plants growth response to gravity (roots are positively gravitropic and stems are negatively gravitropic)

chemotropism

a plants growth in response to a chemical (growth of pollen)

nastic movements

plant movements that occur in respond to environmental stimuli but that are independent of the direction of the stimuli

thigmonastic movement

a type of nastic movement that occurs in response to touching or shaking a plant (venus fly trap)

nyctinastic movements

plant movements in respond to the daily cycle of light and dark (prayer plant)

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