Fruit and leaf drop at early stages can be prevented by the application of

If the growing coleoptile tip is cut,what happens to phototropism?

Describe the plant secretion found in human urine.

Phototropism in shoots is attributed to or phototropic movements are due to:

Auxin in plants is not responsible for:

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