Question

11. Name the excretory organs in the following:
(i) Sponges (ii) Flat worms (iii) Round worms
(iv) Annelids (v) Arthropods (vi) Coelenterates​

Answer 1

Answer:

1) sponges do not have any excretory organ

2) nephridia

3) canals and tubes or they have excretory system

4) proto nephridia

5) malphigian tubules

6) lacks excretory organs

Answer 2

Excretory organs

Explanation:

I Sponges- Ammonia is the chief excretory product in sponges. It diffuses from cells into the water filling the channels and encompassing the wipe. From the trench system, the waste issue is diverted by the active water ebb and flow.  

ii. Flatworms: Have protonephridia with Flame cells  

iii Roundworms - No particular excretory organ is found. Roundworms diffuse metabolic waste through there body wall.

iv Annelids- The excretory system consists of nephridia as the excretory organ which is analogous to the kidney of vertebrates.

v Arthropods: The excretory system of the adult Prawn (crustacean) consists of a pair of antennary or green glands, a pair of lateral ducts and a single renal sac. Insects, centipedes, millipedes, and arachnids like the scorpion and spider posses Malpighian tubules as their principal excretory organs.

vi. Coelenterates: Hydra conjointly lacks special expelling organs. The element waste product like ammonia ar removed through the overall surface of the body by diffusion. Some nitrogenous waste products are also thrown along with indigestible matter through the mouth.