question_answer

Dr. F Went noted that if 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 significance is this experiment?  [AIPMT 2014]

A)  It made possible the isolation and exact identification of auxin                            

B)  It is the basis for quantitative determination of small amounts of growth-promoting substances

C)  It supports the hypothesis that IAA is auxin

D)  It demonstrated polar movement of auxins