Where do most Aedes mosquitoes lay their eggs?

• A. In water-filled containers
• B. Slightly moist soil, just above the water line where they will be flooded after a rainfall
• C. On leaves of trees
• D. In dry mud

Answer: (B)

Aedes mosquitoes lay eggs in moist spots that are just above the water line, such that when rainfall raises the water level those eggs will be flooded and hatch. This allows their eggs to survive dry periods and wait for a temporary pool to form, which is why they’re often found in small artificial containers around homes (flower pots, tires, bins, etc.). They don’t deposit eggs directly into water-filled containers, on leaves, or in dry mud, so those options don’t match their oviposition strategy. Understanding this helps explain why removing standing water and keeping containers dry or covered is an effective control measure.