Question

Which one of the following statements is true for cockroach?

• A. The number of ovarioles in each ovary are ten.
• B. The larval stage is called caterpillar
• C. Anal styles are absent in females
• D. They are ureotelic

Answer 1

The correct option is C Anal styles are absent in females

Anal styles are absent in females but present in males. Tthis character helps to distinguish males from females in cockroach.
In female cockroach each ovary consists of eight ovarioles.
Upon emerging from the egg case, or ootheca, this immature form of cockroach is known as a nymph.
The excretory system of periplaneta helps in eliminating the nitrogenous wastes from the body in the form of uric acid. So periplaneta is called a uricotelic animal.