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Biology 22 Online
OpenStudy (anonymous):

Bean seeds were planted and put on a sunny windowsill. As the plants grew, their stems bent toward the window. This bending was most likely caused by an (Points : 2) unequal distribution of auxin in the stem unequal distribution of a neurotransmitter in the stem equal distribution of auxin in the stem equal distribution of a neurotransmitter in the stem

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