1. The crab has ten pairs of jointed appendages, which include two large claws called chelipeds to capture food,  and eight walking appendages. Notice the differences in the structure of these 8 pairs. - Compare the structures present in the first 3 pairs (modified as maxillipeds), and the last five pairs. - What do you think are the main functions of the last five pairs? - Crustaceans have biramous appendages. What structures are present only in the first pair?  In the last pair?  - What do you think are the functions of these structures?

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