question_answer 20)

  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:

                  (c) Anal styles in male cockroach are present in the 9th segment. These are absent infemales. 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 nitrogenouswaste in the form of uric acid. i.e., they are uricotelic.