What are some characteristics of insects?

• A. 6 legs; 4 wings; 2 antennae; 3 body regions: head, thorax, abdomen; Chewing or sucking mouthparts
• B. 6 legs; 0 wings; 2 antennae; 2 body regions
• C. 8 legs; 4 wings; 2 antennae; 3 body regions
• D. 6 legs; 2 wings; 1 body region; Chewing mouthparts

Answer: (A)

Insects share a body plan with six legs, three distinct body regions (head, thorax, abdomen), and one pair of antennae, plus mouthparts adapted for chewing or sucking. Wings are common in many insects, and when present they can appear as two pairs (four wings), though some insects are wingless. This combination—six legs, two antennae, three body regions, and chewing or sucking mouthparts—is what identifies insects and distinguishes them from other arthropods. The option includes these core features and also acknowledges that wings may be present in the form of two pairs in many species, which explains the four-wing detail. The other choices fall short by missing essential traits such as the correct number of body regions, or implying an anatomy that doesn’t match insects.