Cockroach(Periplaneta Americana)

Which of these differences between male and female cockroaches ( Periplaneta americana ) is correct ?

In the life history of cockroach (Periplaneta) there is :

The number of spiracles in Periplaneta americana is

Assertion (A) Periplaneta americana is nocturnal, omnivorous, household pest. Reason (R) It is because it acts as scavenger.

Periplaneta shows

Periplaneta shows

Choose the correct statement for Periplaneta americana

Which of the following feature is not present in Periplaneta Americana

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

Cockroach - Taxonomy - Difference Between Periplanta & Americana & blatta & Orientalis || Morphology OF Periplanata Americana