(a)[2]
Suggest why catching insects gives a Venus fly trap an advantage in these wetlands.
(b(i))[1]
The leaves of the Venus fly trap will close when an insect stimulates them. State which part of the leaf senses the stimulus.
(b(ii))[1]
Explain how the plant avoids using energy unnecessarily by not closing when it is not needed, for example when a large raindrop touches the receptor.
(c)[3]
Using Fig. 7.2 and Fig. 7.3, describe the ways in which the action potential in the Venus fly trap is different from that in a human.
(d)[5]
Describe how action potentials produced in the leaf cells of the Venus fly trap can make the leaves close and trap an insect.