Which insects go through gradual metamorphosis?

Which insects go through gradual metamorphosis?

• A. Cockroaches, Crickets, Bedbugs/Mites, Booklice
• B. Firebrats, Silverfish
• C. Moths, Fleas
• D. Bees, Wasps

Answer: (A)

Gradual metamorphosis means incomplete metamorphosis, where the young (nymphs) look like smaller versions of the adults and there is no pupal stage—development happens through molts to reach the adult form. Cockroaches, crickets, bedbugs, and booklice all develop this way: their nymphs resemble little adults and progressively molt into full size through several molts. In contrast, firebrats and silverfish are ametabolous, meaning they molt but retain a similar body form with no major life-stage changes. Moths, fleas, bees, and wasps undergo complete metamorphosis, with distinct larval and pupal stages, so they don’t fit gradual metamorphosis.

Gradual metamorphosis means incomplete metamorphosis, where the young (nymphs) look like smaller versions of the adults and there is no pupal stage—development happens through molts to reach the adult form. Cockroaches, crickets, bedbugs, and booklice all develop this way: their nymphs resemble little adults and progressively molt into full size through several molts. In contrast, firebrats and silverfish are ametabolous, meaning they molt but retain a similar body form with no major life-stage changes. Moths, fleas, bees, and wasps undergo complete metamorphosis, with distinct larval and pupal stages, so they don’t fit gradual metamorphosis.