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Q.

The entire body in cockroach is covered by a hard chitinous exoskeleton. In each segment, exoskeleton has hardened plates called ______a_____ (_____b_____ dorsally and _____c____ ventrally) that are joined to each other by a thin flexible _____d_____.

 abcd
1sternitesscleritestergitesarthrodial membrane
2scleritestergitessternitesarticular membrane
3tergitessternitesscleritesarticular membrane
4scleritessternitestergitesarticular membrane

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a

1

b

2

c

3

d

4

answer is B.

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Detailed Solution

The entire body is covered by a hard chitinous exoskeleton. 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).

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The entire body in cockroach is covered by a hard chitinous exoskeleton. In each segment, exoskeleton has hardened plates called ______a_____ (_____b_____ dorsally and _____c____ ventrally) that are joined to each other by a thin flexible _____d_____. abcd1sternitesscleritestergitesarthrodial membrane2scleritestergitessternitesarticular membrane3tergitessternitesscleritesarticular membrane4scleritessternitestergitesarticular membrane