Question

Female cockroach can be identified from the male cockroach by the

• A. presence of anal cerci
• B. absence of caudal styles
• C. long antennae
• D. number of segments in the abdomen

Answer 1

The correct option is B absence of caudal styles

Male and female cockroaches both have 10 segments and long antennae. In both sexes the 10th segment bears a pair of jointed filamentous structure called anal cerci.
Males bear a pair of short, thread-like anal/caudal styles which are absent in females.