NEET BIOLOGY

Detailed explanation-1: -The chitinous exoskeleton in cockroaches has hardened plates called sclerites in each segment. The dorsally placed sclerites are called tergites and the ventrally placed sclerites are called sternites. These are held together by a thin and flexible membrane called the arthrodial membrane.

Detailed explanation-2: -Cockroaches possess hard exoskeleton plates called sclerites. Tergites are the sclerites found on the dorsal side, while sternites are those seen on the ventral side of a cockroach’s body.

Detailed explanation-3: -The exoskeleton has hardened plates in each segment, called sclerites, which are joined by a thin and flexible articular membrane known as the arthrodial membrane. So, the correct answer is, ‘Arthrodial membrane’. Additional Information: Sclerite, a hard exoskeleton, brown, is made up of chitin.

Detailed explanation-4: -The exoskeleton of a cockroach is made up of chitin. The skeleton of cockroach is covered by thick hard chitinous cuticles secreted by the epidermis.

Detailed explanation-5: -In cockroach, the sclerites present on the dorsal side are called tergites.