A botany student set up an experiment where a plant shoot was exposed to unilateral light (light from one direction). After 48 hours, the student observed that the shoot had bent towards the light source. Which of the following statements explains this observation?
Auxin accumulates on the illuminated side of the shoot, stimulating cell elongation.
Auxin accumulates on the shaded side of the shoot, stimulating cell elongation.
Gibberellins accumulate on the illuminated side of the shoot, inhibiting cell division.
Abscisic acid accumulates on the shaded side of the shoot, inhibiting cell elongation.
