To which family do spiders, ticks, and mites belong in the animal kingdom?

Spiders, ticks, and mites all belong to the class Arachnida within the animal kingdom. This classification is characterized by specific traits that distinguish arachnids from other groups. Arachnids typically have eight legs, unlike insects, which have six. Additionally, arachnids possess two main body segments: the cephalothorax and the abdomen. This body structure, along with their mode of life, including predation and parasitism, sets them apart from insects and the other groups mentioned.

Insects, on the other hand, are classified separately due to their three-part body structure and six legs, making them distinct from arachnids. Crustaceans are primarily aquatic and possess varying numbers of legs and body segments, and they belong to a separate class within the arthropod phylum. Mollusks, while a larger and diverse group in the animal kingdom, include soft-bodied animals such as snails and clams, which are not related to spiders, ticks, or mites at all.

Thus, the classification of spiders, ticks, and mites as arachnids accurately reflects their biological and anatomical characteristics.