Fig. 6.1a shows the right eye of a person before entering an area of bright light.
(a(i))[1]
Complete Fig. 6.1b so that it shows how the right eye of the person looks shortly after entering an area of bright light.
(a(ii))[5]
Using named structures in the eye, describe what changes occur when a person moves into an area of bright light.
(b)[4]
Name the type of action that produces the changes you have described and suggest why it is important for these changes to occur.
Worked solution & mark scheme
This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A shaded circle in the iris that is smaller than the one in 6.1(a)” …