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7 Cards in this Set

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  • Back
geotropism
an orienting response to gravity
gravity
the force of attraction between all masses in the universe, especially the attraction of the earth's mass for bodies near its surface
hydrotropism
oriented growth in response to water
phototropism
an orienting response to light
stimuli/stimulus
something that incites to action or exertion or quickens action, feeling, thought
thigmotropism
oriented growth of an organism in response to mechanical contact, as a plant tendril coiling around a string support
tropism
an involuntary orienting response