Excretion In Cockroach: The excrtory organ of cockroch are Malpigian tubule which present at the junction of midgut and hindgut Malpighianthis tubules dip in the haemolymph blood (fluid of body cavity). Cells of the malpighian tubules absorbs the excretory wastes and also some useful substance, that transfred into the reaction. In rectum this nitrogenous wastes short time where reabsorption of salt and water occurs, so the nitrogenous wastes (uric acid) become dry excreter out with faces.
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