Apical dominance is caused by which of the following?

If an etiolated stem is first saturated with auxin by spraying and then exposed to a streak of light from one side,it will:

$2, 4-D$ is a

What is the result of removing the apical bud?

Which of the following movements is not related to changes in auxin levels?

After a series of experiments,it was concluded that the ....$A$.... of coleoptile was the site of transmittable influence that caused the bending of the entire coleoptile.