Excretory Products And Their Elimination

In annelids, excretory organs are
A. Nephridia
B. Malpighian tubules
C. Green glands
D. Kidneys

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Answer: Option A
: A

Nephridia are the tubular excretory structures of earthworms and other annelids. Nephridia help to remove nitrogenous wastes and maintain a fluid and ionic balance. Malpighian tubules are the excretory structures of most of the insects including cockroaches. Malpighian tubules help in the removal of nitrogenous wastes and osmoregulation. Antennal glands or green glands perform the excretory function in crustaceans like prawns. Vertebrates have complex tubular organs called kidneys.

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