Question

What is the excretory organ of cockroach?

Answer 1

Cockroaches:

Cockroaches are well-studied insects because all the basic structures are easily observable in this, hence used in laboratory studies of household pests as a model.

Malpighian tubules

1. It is the excretory organ of cockroach.
2. These are tubular in structures and have free-floating watery blood known as Haemolymph.
3. Malpighian tubules function as excretory and osmoregulatory organs of insects.
4. Malpighian tubules works as excretory organ by absorbing nitrogenous waste products from haemolymph and convert waste into uric acid.