Which of the following is a type of arachnid?

Which of the following is a type of arachnid?

• A. Mite
• B. Beetle
• C. Fly
• D. Nematode

Answer: (A)

Understanding this question comes down to recognizing animal groups by body plan. Arachnids are characterized by eight legs as adults and no antennae, with the body often arranged into two main regions. A mite fits this description precisely: it is an arachnid (in the subclass Acari) and has eight legs in adulthood. In contrast, beetles and flies are insects, which have six legs, three body segments, and usually wings, while nematodes are wormlike creatures without legs at all. So the mite is the one that belongs to the arachnid group.

Understanding this question comes down to recognizing animal groups by body plan. Arachnids are characterized by eight legs as adults and no antennae, with the body often arranged into two main regions. A mite fits this description precisely: it is an arachnid (in the subclass Acari) and has eight legs in adulthood. In contrast, beetles and flies are insects, which have six legs, three body segments, and usually wings, while nematodes are wormlike creatures without legs at all. So the mite is the one that belongs to the arachnid group.