(a)[2]
Suggest why catching insects in these wetlands is advantageous to a Venus fly trap.
(b(i))[1]
The leaves of the Venus fly trap close when they are stimulated by an insect. State which part of the leaf senses the stimulus.
(b(ii))[1]
Explain how the plant avoids wasting energy by not closing when it is unnecessary, for example when a large raindrop hits the receptor.
(c)[3]
Using Fig. 7.2 and Fig. 7.3, describe the ways in which the action potential of the Venus fly trap is different from that of a human.
(d)[5]
Describe how action potentials generated in the leaf cells of the Venus fly trap can cause the leaves to close and trap an insect.