Ownclasses
Name the excretory organ in the following:
i. Platyhelminthes, annelids. rotifers. 
ii. Earthworms. 
iii. Insects
iv. Crustaceans. 
Answer
The excretory organs in different organisms are
i. Protonephridia in Platyhelminthes, annelids, rotifers
ii. Nephridia in earthworms.
iii. Malphigian tubules in insects.
iv. Green glands in crustaceans.