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Question

Select the correct statement from the ones given below with respect to Periplaneta americana
  1. Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives.
  2. Males bear a pair of short thread like anal styles.
  3. There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut.
  4. Grinding of food is carried out only by the mouth parts.

A
Grinding of food is carried out only by the mouth parts.
B
Males bear a pair of short thread like anal styles.
C
Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives.
D
There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut.
Solution
Verified by Toppr

The correct option is B Males bear a pair of short thread like anal styles.
Males bear a pair of short, thread-like anal styles which are absent in females, anal/caudal styles arise from the 9th abdominal segment in the male cockroach.
So, the correct option is 'Males bear a pair of short thread-like anal styles'.

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