Which of the following is an example of a structural adaptation?

• A. A beak shape that helps eat certain prey
• B. A behavioral habit of migrating seasonally
• C. A learned fear response
• D. A camouflage behavior

Answer: (A)

Structural adaptations are physical features of an organism that help it survive by doing something in its environment. A beak shape that helps eat certain prey is a structural adaptation because the beak is a physical part of the creature’s body, and its shape directly influences what it can eat. This trait is inherited and part of the anatomy, making feeding more efficient for that species.

The other options describe actions or responses rather than built-in body parts: migrating seasonally is a behavior, learned fear is a learned response, and camouflaging described as a behavior involves using tactics rather than a fixed physical feature. Therefore, the beak shape is the example that best represents a structural adaptation.