O-LevelBiologyEcology & Environment5090/11 · May/June 2013 · Q311 Mark

Which factor does not help to make the mosquito an effective vector of malaria?

AMosquitoes are attracted to warmth and carbon dioxide.

BMosquitoes lay their eggs in water.

CMosquito saliva stops blood from clotting.

DThe malaria pathogens live in mosquito salivary glands.

✓ Correct answer

B: Mosquitoes lay their eggs in water.

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

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