Observation

This question was attempted by majority of the candidates and their performance was good.
In part (a) some candidates could not correctly name the parts labeled I, II, III, V and VI. In part (b) they did well in it, they were able to mention ways in which the person illustrated in the diagram can be infected. In part (c) majority got the answer. In part (d) they did well in it.

The expected answers are as follow:
1.         (a)        Parts labelled
           
I         -          adult worm / Dracunculus /guinea worm
II        -          skin blister/sore/wound
III        -          water flea / cyclops
IV        -           infected water
V        -           alimentary canal/gut/oesophagus/gullet
VI        -           duodenum/intestine

(b)       Ways in which the person illustrated in the diagram can be infected

-           wading / bathing in infected water
-           drinking infected water

(c)        The only part destroyed by the illustrated worm in humans

-           skin / skin of the feet / leg/named

(d)       Ways of preventing guinea worm infestation

-           drink clean water / treat water before drinking
-           destroy cyclops / intermediate hosts
-           desist from bathing /wading in infected streams / rivers
-           health talk / education should be carried out on guinea worm
-           report any sign of guinea worm infection to medical personnel