Hind wings of mosquitoes are termed as

What are gonapophyses in male cockroaches?

The cockroach is ....... .

Cockroaches are brown or black bodied animals that are included in class . . . . . . of phylum . . . . . . .

Which of the following is a characteristic feature of the cockroach regarding sexual dimorphism?

Segments in the head of a cockroach - $P$
Segments in the thorax of a cockroach - $Q$
Segments in the abdomen of a cockroach - $R$
Select the correct option for $P, Q, R$.