K.C.S.E Biology Q & A - MODEL 2009PP2QN04
(a) (i) Explain the changes that take place in the pupil and iris of a human eye when a person moves from a dark room to a room with bright light
(ii) What is the significance of the changes explained in (a) above
(b) How does the human eye obtain nutrients?
(c) Explain why images that form on the blind spot are not perceived