Question

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

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

Answer 1

The correct option is A

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

Males bear a pair of short thread-like anal styles. Anal styles are absent in female cockroaches.

The nervous system is located on the ventral side. It consists of segmentally arranged ganglia joined by a pair of longitudinal connectives.

There are 100-105 thin Malpighian tubules present at the junctions of the midgut and hindgut.

The gizzard also helps in the grinding of food.