Auxins were discovered by

The chemical formula of auxin $a$ is:

Apical dominance is caused by

Dr. $F$. Went removed the coleoptile tips and placed them in agar for one hour. The agar block then caused curvature in decapitated coleoptiles. What does this experiment demonstrate?

Premature fruit drop in orange and pear is prevented by . . . . . . .

If the concentration of $IAA$ is increased in the roots of a plant,the absorption of water would