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2 marksHealth and Sanitation

CSEC Integrated Science · 2006 · Paper 2 · Question 5(b)(i)

A rural community near a river engages in kitchen gardening, livestock rearing, and fishing. They spray a new insecticide ('Insect-Doom') due to an increase in flies, ants, and other insects.

Suggest TWO factors that might be responsible for the increase in the number of flies in the rural community.

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Other parts of this question

  1. 5(a)(i)Complete Table 2 by writing the description for parasites for both 'Type of habitat' and 'How they obtain food'.[2 marks]
  2. 5(a)(ii)Name TWO common household pests.[2 marks]
  3. 5(b)(ii)In addition to using insecticides, suggest ONE other method which the residents could use to control the number of flies.[1 mark]
  4. 5(c)(i)How could spraying of the new insecticide be responsible for the decrease in produce from the gardens?[2 marks]
  5. 5(c)(ii)How could spraying of the new insecticide be responsible for the decrease in the number of fish?[2 marks]
  6. 5(d)(i)a)State the effect reducing the insect population would have on the weed population.[1 mark]
  7. 5(d)(i)b)State the effect reducing the insect population would have on the spider population.[1 mark]
  8. 5(d)(ii)Select ONE food chain from the food web in Figure 7 and write it down.[2 marks]

More practice: the rest of this paper · more Health and Sanitation questions · all CSEC Integrated Science past papers