What does it mean for an insect to be an 'exopteragote'?

What does it mean for an insect to be an 'exopteragote'?

• A. Wings develop externally
• B. Wings develop internally
• C. They undergo incomplete metamorphosis
• D. They are wingless throughout life

Answer: (A)

Exopterygotes are insects in which wings develop on the outside of the body. You can see wing buds or pads on the growing immature forms, and these exterior structures expand and unfold as the insect molts toward the adult, usually without a pupal stage. This external origin of wings is tied to incomplete metamorphosis, where the young resemble small adults and gradually gain wings with each molt. In contrast, wings that form internally from imaginal discs inside the body belong to endopterygotes, which undergo complete metamorphosis with a pupal stage. The idea here is that the wings’ external development is the defining feature of exopterygotes.

Exopterygotes are insects in which wings develop on the outside of the body. You can see wing buds or pads on the growing immature forms, and these exterior structures expand and unfold as the insect molts toward the adult, usually without a pupal stage. This external origin of wings is tied to incomplete metamorphosis, where the young resemble small adults and gradually gain wings with each molt. In contrast, wings that form internally from imaginal discs inside the body belong to endopterygotes, which undergo complete metamorphosis with a pupal stage. The idea here is that the wings’ external development is the defining feature of exopterygotes.