Question 2
The diagram below illustrates an insect. Study it and answerquestions2(a) to 2(c).
(a)(i) Name two disease-causing organisms carried by the insect. [2 marks]
(ii) State three diseases associated with the insect. [3 marks]
(b) Mention two damages that could be caused by the illustrated insects in homes. [2 marks]
(c) Mention threeways of controlling the illustrated insect in homes. [3 marks]
Observation
This question was attempted by majority of the candidates and they did well in it.However,
vital marks were lost to spelling errors.
The expected answers are:
(a)(i)Disease-causing organisms carried by cockroach
- Rickettsia
- Bacteria
- Virus
- Protozoa
- Worms/Helminths
- Fungi
(ii) Diseases associated with cockroach
- Typhoid fever
- Cholera
- Dysentery
- Plague
- Diarrhoea/Gastroenteritis
- Poliomyelitis
- Amoebic dysentery
- Food poisoning/Salmonellosis
- Leprosy
- Worm infestation/named
(b) Damages that could be caused bycockroach in homes
- Ruins/damages/spoils food
- Spreads disease
- Destroys properties
- Food poisoning
- Bites
(c) Ways of controlling cockroach in homes
- Storing food in insect-proof containers/keep food covered
- Application of insecticide/kill the insect
- Frequent/constant fumigation/chemical control
- Proper refuse disposal
- Blocking route of entry
- Introducing biological control/named
- Keeping the surrounding/environment clean
- Keeping houses/surroundings ventilated and illuminated at all times