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Biology 21 Online
voltapebble:

When a vine grows around a fence, which response is it exhibiting? a. hydrotropism b. gravitropism c. phototropism d. thigmotropism

hmmmm:

What do you think it is?

someguy:

the vine is using the fence for support so it doesn't end up on the ground getting crushed if that helps I could also supply definitions if you would like

voltapebble:

please and thank you

someguy:

hydrotropism: the growth or turning of plant roots toward or away from moisture. gravitropism: a tropism (as of plant roots or shoots) in which gravity is the stimulus : geotropism No matter what the orientation of a seed for instance, the roots will always grow down to the soil phototropism: the orientation of a plant or other organism in response to light, either toward the source of light ( positive phototropism ) or away from it ( negative phototropism ). thigmotropism: the turning or bending of a plant or other organism in response to a touch stimulus.

someguy:

hope this helps

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