What are the two main sections comprising the lobster's twenty-one body segments?
Answer
Cephalothorax and Abdomen
The fundamental organization of the lobster’s body structure involves the fusion of many segments into two primary sections. The first major section is the cephalothorax, which results from the fusion of the head and the thorax regions. The head portion contains essential sensory organs like eyes and antennae, while the thorax section serves as the attachment point for the walking legs and the claws. The second major section is the abdomen, frequently referred to as the tail. This posterior section is distinctly segmented and highly muscular, culminating in the tail fin structure necessary for rapid backward propulsion when fleeing predators.

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