Q.

The head of cockroach is ___(A)____ and is formed by the fusion of ___(B)____ embryonic segments.

 AB
(1)triangularfour
(2)triangularsix
(3)circularten
(4)kidney-shapedsix

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a

1

b

2

c

3

d

4

answer is B.

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Detailed Solution

The head of cockroach is triangular and lies anteriorly at right angles to the longitudinal body axis (hypognathous). It is formed by the fusion of six embryonic segments.

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The head of cockroach is ___(A)____ and is formed by the fusion of ___(B)____ embryonic segments. AB(1)triangularfour(2)triangularsix(3)circularten(4)kidney-shapedsix