Question

Which one of the following statements is true for cockroach?

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

Answer 1

The correct option is B Anal styles are absent in females

The number of ovarioles in each ovary are ten

The number of ovarioles in each ovary are 8 each containing a row of developing eggs.

The larval stage is called caterpillar

Cockroaches do not have a larval stage. The larval stage of a butterfly is called a caterpillar.

Anal styles are absent in females

Cockroaches exhibit sexual dimorphism. One of the characteristic feature that distinguishes between male and female cockroach is the presence of anal styles in male cockroaches. A pair of anal styles is present in the ninth segment of male cockroaches.


They are ureotelic

Organisms that excrete the nitrogenous waste in the form of urea are called ureotelic, whereas those that excrete in the form of uric acid are called uricotelic. Cockroaches are uricotelic as the nitrogenous waste is excreted in the form of uric acid and not ureotelic.

Final answer: c. Anal styles are absent in females.