What are the characteristics of Anopheles larva?

• A. Long siphon, hang diagonally
• B. Short siphon, hang vertically
• C. No siphon, horizontal to water surface
• D. Siphon at tail end for breathing

Answer: (C)

Anopheles larvae are identified by how they breathe and where they rest at the water’s surface. They do not have a breathing siphon at the end of their abdomen, so they don’t hang from the surface to access air. Instead, they remain flattened and lie parallel to, or very close to, the water surface. This horizontal posture contrasts with other mosquito larvae that possess a posterior siphon and tend to hang from the surface, often diagonally or vertically, to breathe.

So the best description is a larva without a siphon that stays horizontal to the water surface.