Mosquitoes whose larvae lie horizontal on water and thus rest parallel to surface of water
**Core Concept**
The question is testing the knowledge of mosquito larvae habitats and their morphology. Mosquito larvae are aquatic insects that go through four stages of development, and their habitats play a crucial role in their life cycle.
**Why the Correct Answer is Right**
Mosquito larvae that lie horizontal on the water surface and rest parallel to it are known as Anopheline larvae. These larvae have a characteristic breathing siphon that allows them to breathe air from the surface, and they tend to rest parallel to the water surface. This characteristic is used to distinguish Anopheline larvae from other mosquito larvae, which typically rest at an angle to the water surface.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is likely incorrect because it doesn't specify the type of mosquito larvae. There are many types of mosquito larvae, and this description could apply to several species.
* **Option B:** This option is incorrect because it doesn't accurately describe Anopheline larvae. While other mosquito larvae may rest at an angle to the water surface, Anopheline larvae are characterized by their horizontal resting position.
* **Option C:** This option is likely incorrect because it doesn't provide a clear description of the mosquito larvae. Without more information, it's difficult to determine whether this option is correct or not.
* **Option D:** This option is incorrect because it's a distractor and doesn't accurately describe Anopheline larvae.
**Clinical Pearl / High-Yield Fact**
Anopheline larvae are the primary vector for malaria, and their identification is crucial in understanding the epidemiology of the disease. Knowing the characteristics of Anopheline larvae can help public health officials target control measures to prevent the spread of malaria.
**Correct Answer: B. Anopheline larvae.