O-LevelBiologyEcology & Environment5090/11 · Oct/Nov 2013 · Q311 Mark

One method of preventing malaria is to reduce the number of vectors. Which control method will achieve this?

ACover areas of standing water to prevent mosquitoes from laying eggs.

BUse an anti-malarial drug that kills the malarial pathogen in the human body.

CUse an anti-malarial drug that inhibits the reproduction of the malarial pathogen.

DUse mosquito nets that prevent mosquitoes from sucking blood.

✓ Correct answer

A: Cover areas of standing water to prevent mosquitoes from laying eggs.

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2013 Paper 1 Variant 1, question 31.

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