Question

What is correct about the anal cerci in a cockroach?

• A. Emerge out from the 10th segment in both the sexes.
• B. Found in male cockroaches only.
• C. These are short thread like structures
• D. These are used for the purpose of reproduction.

Answer 1

Answer: (A)

The abdomen in both male and female cockroaches consists of 10 segments. A pair of anal cerci are found in the 10th segment of both the sexes. They are joint filamentous structures that are sensitive to sound and vibrations.
Meanwhile, anal styles are a pair of short thread-like structures that help in copulation. These are found in males only.