Question

In cockroaches, the sclerites are joined to each other by

• A. a thin and flexible articular membrane.
• B. the thin and flexible muscles of the tergites.
• C. the thin and flexible muscles of the sternites.
• D. the extended membrane of the wings.

Answer 1

Answer: (A)

The body of the cockroach is segmented and divisible into three distinct regions - head, thorax and abdomen. The entire body is covered by a hard chitinous exoskeleton (brown in colour). In each segment, exoskeleton has hardened plates called sclerites (tergites dorsally and sternites ventrally) that are joined to each other by a thin and flexible articular membrane (arthrodial membrane).