Oil applied to the surface of water kills the larvae of mosquitoes through

Assessment: WAEC SSCE - Biology - 2015 (Objective) Subject: Biology

Question 1 Report

Oil applied to the surface of water kills the larvae of mosquitoes through
Answer Details
Oil applied to the surface of water kills the larvae of mosquitoes through suffocation. Mosquito larvae breathe air through a tube called a siphon, which they use to reach the surface of the water to breathe. When a layer of oil is applied to the surface of the water, it creates a film that covers the siphon and prevents the larvae from accessing air. As a result, the larvae suffocate and die. This method is often used as a non-toxic and environmentally friendly way to control mosquito populations.
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