Florida Public Health Practice Exam

Anopheles larvae are distinct in their morphology, particularly regarding their respiratory structures and body features. One of the key characteristics is their absence of a siphon, which is a tube-like structure that some mosquito larvae use to breathe at the water's surface. Instead, Anopheles larvae possess palmate hair that is located dorsally, which aids in buoyancy and helps them to navigate their aquatic environment.

These larvae are typically found in clean, freshwater habitats and are recognized by this lack of a siphon and the presence of these unique hair formations. This morphological distinction is crucial for the identification and study of mosquito larvae within the context of public health, especially given that Anopheles mosquitoes are vectors for malaria and other diseases.

The other features mentioned in the incorrect options do not align with the established characteristics of Anopheles larvae. They may describe aspects of other mosquito genera or misinterpret their structural attributes, which reinforces the importance of knowing these specific identifying features.