Question

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.

What is the significance of the above experiment performed by Dr. F. Went?

Options

• It made possible the isolation and exact identification of auxin.

• It supports the hypothesis that IAA is auxin.

• It demonstrated polar movement of auxins.

• It is the basis for quantitative determination of small amounts of growth-promoting substances.

Answer 1

It made possible the isolation and exact identification of auxin.