Design an experiment using a seedling and a block of agar soaked with auxins that might con- firm the effect of this hormone on the elongation of the coleoptile. (Hint: Remember that the auxins are permeable to the agar material.)

5. what might happen if you were to remove all light from the setup after the discs have all become buoyant? describe what you would see. explain why this would occur with relation to cellular processes like respiration. [referring to an ap biology lab in which spinach discs are placed in a sodium bicarbonate solution and exposed to light.]