In a specimen-based viva, the examiner describes this case: segments of an insect are grouped into head, thorax, and abdomen with different functions. Choose the concept that fits it best.

Tagmatization is the grouping of segments into specialized body regions called tagmata. It is a major reason for arthropod functional diversity. This MCQ belongs to the Arthropoda topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.