Gravitropism in roots is a response to __________ and to the hormone__________.

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    gravity; auxin
    the biological clock; phytochrome Pr
    altitude; ethylene
    Earths rotation; cytokinin

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asked May 30, 2013 in Biology by anonymous
    

1 Answer

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gravity; auxin
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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