Describe the excretory organs in various organisms.

1.	Describe the excretory organs in various organisms.
Answer» Insects, centipedes, millipedes and arachnids like scorpion and spider posses Malpighian tubules as their principal excretory organs. In the Malpighian tubules bicarbonates of potassium and sodium, water and uric acid are formed. Spiders and scorpions possess Malpighian tubules and coxal glands both for excretion.

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