Which three primary segments clearly divide the yellowjacket body plan?
Answer
Head, thorax, and abdomen
The yellowjacket follows the standard insect body plan, which is characterized by a clear division into three main sections. These three fundamental segments are the head, which houses the sensory organs and mouthparts; the thorax, which serves as the central attachment point for the legs and wings; and the abdomen, which contains the digestive and reproductive organs, as well as the stinger apparatus. The defining feature is not one of these main segments, but the slender structure, the petiole, that links the thorax and the abdomen.
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