ARTHROPOD OR MOLLUSC? 3Online version Is this an arthropod or a mollusc? by Rafael Rodríguez Pérez 1 It has got a segmented body. Hints 1 It has got an exoskeleton. 2 It's invertebrate. 3 Come on, it's a piece of cake! Is it an arthropod or a mollusc? 4 They have got six legs. 5 They can be black, brown or red. 6 Arthropod or mollusc?