Ncert Exercises & Solutions

Which one of the following statements is true for cockroach?

1. The number of ovarioles in each ovary are ten

2. The larval stage is called caterpillar

3. Anal styles are absent in females

4. They are ureotelic

(c) Anal styles in male cockroach are present in the 9th segment. These are absent in females.

Other statement are incorrect because

The female cockroach has paired ovaries, each consisting of 8 ovarioles

Cockroach possess nymphal stage instead of larval stage.

Excretory organ of cockroach is Malpighian tubules, they remove the nitrogenous waste in the form ofuric acid. i.e., they are uricotelic.

Page 112, XI NCERT