Question

Acoustic organs of Cockroach are located over

• A. Anal styles
• B. Fenestrae
• C. Anal cerci
• D. Filament part of antennae

Answer 1

The correct option is C Anal cerci

In both males and female sexes, the 10th segment bears a pair of jointed filamentous structures called anal cerci. The abdomen in both males and females consists of 10 segments. Two segmented cerci lie on the exterior of the lower part of a roach's abdomen. These somewhat resemble antennae, and they can behave as sensory organs. A nerve inside the roach allows it to detect air movement around its cerci which are known as the acoustic organs of cockroach located around the anal cerci.

So the correct answer is 'Anal cerci'.