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Select the correct statement from the ones given below with respect to Periplaneta americana.

A

Nervous system located dorsally , consists of segmentally arranged ganglia joined by a pair of longitudinal connectives

B

Males bear a pair of short thread-like anal styles

C

There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

D

Grinding of food is carried out only by the mouth parts

Text Solution

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The correct Answer is:
b
In cockroach, the male and females can be identified easily with the presence or absence of one pair of anal styles in the posterior region. The anal styles are unjointed, thread-like structures present on the `9^(th)`, stemite of male.
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