What happens when auxin is applied to the tip of a cut stump?

Which of the following auxins is widely used as a weedicide?

Mowing a grass lawn facilitates better maintenance primarily owing to:

Synthetic auxins are used for

Which is not a physiological effect of auxins?

The pineapple,which under natural conditions is difficult to blossom,has been made to produce fruits throughout the year by the application of: