What is the larval stage of a mosquito commonly referred to as?

The larval stage of a mosquito is commonly referred to as a "wriggler." This term is used because mosquito larvae move in a distinctive wriggling motion when swimming in water. This motion helps them navigate through their aquatic environment while they feed on organic matter and microorganisms. Additionally, the wriggler stage is a crucial part of the mosquito's life cycle, as it is during this phase that the larvae grow and eventually metamorphose into pupae, and later into adult mosquitoes.

In contrast, the other options do not accurately describe the mosquito larval stage. "Lava" refers to molten rock and is not related to the life cycle of insects. "Sponge" relates to a different category of organisms and is unrelated to mosquito larvae. "Chrysalis" refers to the pupal stage of certain insects, such as butterflies, which signifies a very different stage in the life cycle.