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Identify the incorrect statement about cockroach

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Arthrodial membrane is a flexible articular membrane that joins the sclerites

Body is covered by a hard collagenous exoskeleton

Head lies at right angles to the longitudinal axis of the body

Mobility of the head is due to flexible neck which is an extension of prothorax

answer is C.

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Detailed Solution

The exoskeleton of cockroach is chitinous in nature. It forms sclerites namely dorsal tergites, ventral sternites and lateral pleurites. The exoskeleton helps in protection and conservation of water.

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