Biology 0610 · IGCSE · Tropic responses

Tropic responses — practice question

The diagram illustrates a shoot bending towards light. Which statement correctly describes auxin’s role in phototropism?

  • AAuxin will move to the dark side of the shoot and cause cells to elongate.
  • BAuxin will move to the dark side of the shoot and prevent cells from elongating.
  • CAuxin will move to the light side of the shoot and cause cells to elongate.
  • DAuxin will move to the light side of the shoot and prevent cells from elongating.

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