Please answer the following question: Q: In most crustaceans, what two structures fuse to form a cephalothorax? Read this paragraph and choose the correct option from the provided answers: Unlike that of the Hexapoda, the head and thorax of most crustaceans is fused to form a cephalothorax (Figure 28.40), which is covered by a plate called the carapace, thus producing a body structure of two tagma. Crustaceans have a chitinous exoskeleton that is shed by molting whenever the animal increases in size. The exoskeletons of many species are also infused with calcium carbonate, which makes them even stronger than in other arthropods. Crustaceans have an open circulatory system where blood is pumped into the hemocoel by the dorsally located heart. Hemocyanin and hemoglobin are the respiratory pigments present in these animals. Choices: - foot and toes - body and shoulders - wing and legs - head and thorax A:
A:
head and thorax