The diagram below is an illustration of a reflex are. Use it to answer question 3(a)(i)  

(i) Identify the parts labelled I to VllI
(ii) State one importance of a reflex action.
(iii) Give three examples of simple reflexes.

Name the lenses used for correcting:
(i) Short sight;
long sight.

[4 marks] [1 mark] [3 marks]

(ii) Long sight. (2 marks)

The experimental set up in the diagrams below illustrates the mechanism, of breathing in humans. Use it to answer 4(a) to 4(d).

OBSERVATION

The performance of candidates was fair on this number as a good number of the candidates could name the parts which make up the reflex arc. A lot of the candidates however could not give examples of simple reflexes. In stating the lenses used for correcting short and long sight, many candidates mixed up the lenses stating that short sight will be corrected by convex lenses and long sight by concave lenses rather than vise versa.