Describe the Excretion in Cockroaches

Excretion in Cockroaches


In cockroach, inorganic salts and water are major waste products. In cockroach, malpighian tubules or tracheal tubules are excretory organs. Co2 is removed through tracheal tubes. Other wastes are extracted by malpighian tubules from hemolymph.Urine moves to hinder parts of the body. Here water is absorbed and wastes and finally thrown outside of the body as faeces.


Structure of malpighian tubule:


These are yellowish thread like structures. They are arranged in six groups each having about fifteen blind ended tubules. These blind ended tubules float freely in hemolymph.


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