List the excretory organs of invertebrates in relation with the animals.

Excretory organs of invertebrates in relation with animals are:

i. Phylum Protozoa: Excretion of waste (carbon dioxide and ammonia) takes place by the process of diffusion through body surface. There are no specific excretory organs. For example- amoeba

ii. Phylum Porifera: Pore-bearers excrete through osculum.

iii. Phylum Plathyelminthes: Flat worms excrete through flame cells.

iv. Phylum Annelida: Nephridia are excretory structures and help to remove metabolic wastes. For example- Earthworm

v. Phylum Arthropoda: Excretion occurs through malphigian tubules. For example: Coackroaches Excretory organs of prawn are green glands

vi. Phylum Echinoderamata: Excretory organs are absent.

vii. Phylum Coelenterata: There are no particular excretory organs. Excretion takes place by the process of diffusion. For example: Hydra

viii. Phylum Mollusca: Eexcretion takes place through one or two pairs of kidneys present in them.