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in Biology by (122k points)
Dr. F. Went noted that is coleoptile tips were removed and placed on agar for one hour , the agar would produce a bending when placed on one side of freshly cut coleoptile stumps .Of what sighifcance is this exeriment
A. It demonstrated polar movement of auxins. 
B. It made possible the isolation and exact identification of auxin. 
C.  It is the basis for quantitative determination of small amounts of growth~promoting substances. 
D.  It supports the hypothesis that 1AA is auxin. 

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Correct Answer - B

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