Question

What role does auxin play in phototropism? LMK ASAP

-It produces extra chlorophyll on the bright side of a plant.
-It absorbs additional light on the dark side of a plant
-It shrinks the cells on the bright side of a stem, which causes the stem to bend toward the light.
-It elongates the cells on the dark side of a stem, which causes the stem to bend toward the light

Answer 1

Auxin elongates the cells on the dark side of a stem, which causes the stem to bend toward the light. Therefore, the correct answer is D.