Biology 9700 · AS & A Level · Control and coordination in plants

Control and coordination in plants — practice question

(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.

Worked solution & mark scheme

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

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