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Biology 13 Online
OpenStudy (anonymous):

When plants grow towards the sun, this is an example of _______. A. thigmotropism B. negative tropism C. gravitropism D. phototropism

OpenStudy (blues):

Any ideas which one it is or isn't?

OpenStudy (anonymous):

Just guessing, but could it be D?

OpenStudy (blues):

I like D too. "Photo" means "light", "tropism" loosely means "growth." So the word from Latin would literally be "grow toward light."

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