Select the correct statement from the ones given below with respect...

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

Options

ANervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives
BMales bear a pair of short thread like anal styles
CThere are 16 very long Malpighian tubules present at the junctions of midgut and hindgut
DGrinding of food is carried out only by the mouth parts

Correct answer

B. Males bear a pair of short thread like anal styles

Step-by-step solution

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^{\text{th }}

strenum of male. Besides anal styles both male and female bear one pair sensory, 15 segmented and cerci.

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