Excretory Organs of animals

Phylum		Excretory organ
Porifera		No. Diffusion through body surface
Cnidaria		No. Diffusion through body surface
Ctenophora		No. Diffusion through body surface
Platyhelminthes		Protonephredia (Flame cells)
Nemathelminthes		Renette cells
Annelida	Oligochaetes	Nephredia (Metanephredia)
	Polychaetes	Protonephredia and metanephredia
Arthropoda	Crustaceans	Antennary (Green) glands
	Arachnids (spiders, scorpions etc), Limulus	Coxal glands
	Insecta, chilopods, diplopods	Malpighian tubules
Mollusca	General	Metanephredia
	Fresh water mussel	Organs of Bojanus, Keber’s organs
Echinodermata		Dermal branchiae
Hemichordata		Proboscis gland
Chordata	Urochordata	Neural glands
	Cephalochordate	Protonephredia with solenocytes
	Vertebrata	Kidney
	Amphioxus	Hatschek’s nephredium, paired nephredia and Brown funnels