A) Cephalothorax, biramous appendages and gills
B) Cephalothorax, book lungs and chitinous exoskeleton
C) Head and thorax, book lungs and chitinous exoskeleton
D) Head and thorax, biramous appendages and book lungs
Correct Answer: A
Solution :
Crustacean are the dominant arthropods of sea, with cephalothorax, biramous appendages, and respiration by gills. Common example are prawn, lobsters and crabs.
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