(a)[8]
Describe the Venus fly trap’s response when it is touched.
(b)[7]
Explain how gibberellin synthesis is controlled and describe how gibberellin promotes stem elongation.
Biology 9700 · AS & A Level · Control and coordination in plants
Describe the Venus fly trap’s response when it is touched.
Explain how gibberellin synthesis is controlled and describe how gibberellin promotes stem elongation.
This 15-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Conversion of a mechanical stimulus into an electrical signal, causing rapid leaf closure” …