Biology, asked by zeeshansids007, 1 year ago

find out the excretory organs of cockroach,lizard,fishes and birds

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Answered by Anonymous
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The excretory organ of cockroach is the malpighian tubules. It is found at the junction of the midgut and hind gut and are about 150 in number. They are fine, yellow coloured and branched threads present in bundles. They lie freely in the haemolymph.
The primary excretory organ in fishes, as in other vertebrates, is the kidney. In fishes some excretion also takes place in the digestive tract, skin, and especially the gills (where ammonia is given off
An excretory organ is the organ that separates waste substances from the blood and gets rid of them. For birds, the kidneys separates nitrogenous waste from the blood and turns them into uric acid and then gets rid of them through the cloaca. 

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