Question 4
(a) Mention four hosts of specimen Q. [4 marks]
(b) State four effects of specimen P on its host. [4 marks]
(c) Mention four measures that could be used to control specimen P. [4 marks]
(d) State three measures that could be used to control specimen Q. . [3 marks]
Observation
This question was well attempted by the candidates. In 4(a), majority of the candidates were able to mention the hosts of specimen Q (Roundworm). Also, most of them were able to state the effects of specimen P(Tick) on its hosts as required in 4(b). However, most of the candidates could not mention the measures that could be used to control specimen P(Tick) as required in 4(c).
Finally, majority of the candidates were able to state the measures that could be used to control specimen Q (Roundworm)as required in 4(d).
The expected answers include:
4 (c) Measures that could be used to control Specimen P (Tick)
- Hand picking
- Practising rotational grazing
- Use of pesticide/acaricide (oral, dipping, spraying, injection)
- Burning of infested pastures
- Vaccination
- Proper sanitation
- Keeping/raising of tick-resistant animals