The diagram illustrates a plant beside a window. Which statement accounts for the growth of the plant shoot?
- AThere is a higher concentration of auxin in the cells on the shaded side of the shoot. This prevents cell elongation.
- BThere is a higher concentration of auxin in the cells on the shaded side of the shoot. This stimulates cell elongation.
- CThere is a lower concentration of auxin in the cells on the shaded side of the shoot. This prevents cell elongation.
- DThere is a lower concentration of auxin in the cells on the shaded side of the shoot. This stimulates cell elongation.