Body cavity in arthropods is (a) Coelom (b) Haemocoel (c) Psuedocoel (d) Coelenterons
Option b) Arthropod's primary internal cavity is hemocoel, which accommodates their internal organs and through their haemolymph (analogue of blood), they circulate in their open circulatory system. The body cavity is known as sinus which is divided into the pericardial sinus, perivisceral sinus and perineural sinus.
