| Each segment of the cockroach exoskeleton has hardened plates called |
| a) | Sclerites | b) | Carples |
| c) | Arthrodial membrane | d) | Ossicles |
| (a)Body of the cockroach is covered by hard chitinous exoskeleton. Exoskeleton has hardened plates called sclerites, which are joined to each other by a thin and flexible articular membrane. These sclerites are formed of chitin which is a polysaccharide of acetylglucosamine molecules |