Which order is known for having four membranous wings, elongate body, cerci present, long antennae, and chewing mouthparts?

• A. Gryllacrididae
• B. Pleoptera
• C. Acrididae
• D. Tetrigrade

Answer: (B)

Wing arrangement and body shape are strong clues for insect orders. Stoneflies (Plecoptera) have four membranous wings and an elongated body, with long antennae and paired cerci at the abdomen tip, plus chewing mouthparts in adults. The wings are not thickened or leathery like in some other groups, and the long cerci are a distinctive tail feature you’d expect to see in stoneflies. The other options don’t match this combination as well: some Orthoptera-related groups have reduced or leathery front wings rather than two fully membranous pairs, and one option isn’t a real order. So the description most accurately points to stoneflies.