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

Options

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.

Answer

B

Explanation

In male cockroach, from the sides of the `9^(th)` sternum, there arises a paired, small unjoined outgrowths called anal styles. These structures are sensitive to touch. These are absent in female cockroach. Nervous system is located ventrally. There are 100-150 Malpighian tubules. Grinding of foof is carries out by mouth parts and gizzard.