The exoskeleton of cockroach is rigid, yet the body can bend a little between the body segments due to

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dorsal tergites which are pigmented

arthrodial membranes which are flexible

ventral sternites which are chitinous

lateral pleurites which connect tergites and sternites

answer is B.

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Detailed Solution

The sclerites are jointed to one another by arthrodial membranes which are flexible. This allows some bending of the body between the segments.

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