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Q. In Periplaneta americana, the ventral sclerite is called

NTA AbhyasNTA Abhyas 2020Structural Organisation in Animals

Solution:

The entire body is covered by a hard chitinous exoskeleton (brown in colour). In each segment, the 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).