(a)[3]
State three further stimuli to which sense organs respond.
(b(i))[3]
State the names of the labelled structures in Fig. 6.1.
(b(ii))[1]
Draw an X on Fig. 6.1 to indicate the position of the blind spot.
(c(i))[4]
Complete the sentences using the words from the list. Light rays reach the front of the eye. Light is [BLANK] by the cornea and the [BLANK] focuses light onto the retina. Light [BLANK] in the retina detect light and the optic nerve carries impulses to the [BLANK].
(c(ii))[1]
State how the diameter of the pupil changes in a person’s eye when they go from a bright room into a dark room.