Question

Select the correct option with respect to cockroaches.

• A. Malpighian tubules convert nitrogenous wastes into urea.
• B. Males bear short anal styles not present in females.
• C. Nervous system comprises of a dorsal nerve cord and ten pairs of ganglia.
• D. The fore wings are tegmina which are used in flight.

Answer 1

The Correct Option is B

Malpighian tubules are the main excretory structures in cockroach. They extract nitrogenous wastes and water from haemolymph and reabsorb certain salts resulting in precipitation of uric acid. So, cockroach is uricotelic. Males have paired anal styles on 9th abdominal stemite which are absent in females.