SureDenExcretory organs
Excretory organs:
- Homeostasis: The process of maintaining a constant body temperature to maintain all system and process in our body.
- Osmo-regulation: The process of maintaining the level of salts and water in our body.
- Excretion: The process of removal of nitrogenous waste materials outside of body to maintain body fluids, salts level and also to regulate body temperature is called Excretion.
- Excretory organs: The organ that removes waste material outside of body.
Table showing excretory organs:
|
Animal group |
Main nitrogenous waste product |
Excretory organ |
|
Protozoa Ex- Amoeba |
Ammonia (NH3) |
Through diffusion of water through their cell membrane. |
|
Porifera |
Ammonia (NH3) |
By diffusion |
|
Coelenterata Ex- Hydra |
Ammonia (NH3) |
By diffusion |
|
Platyhelminthis Ex- planaria |
Ammonia(NH3) |
By diffusion through body surface. |
|
Earthworm |
Ammonia |
By metanephridia |
|
Leech |
Ammonia |
By metanephridia |
|
Insects |
Uric acid |
Malphigian tubules |
|
Vertebrata:- (Reptiles, birds) (Bony fishes ) (Amphibians, mammals and cartilaginous fishes.) |
Uric acid Ammonia Urea |
Fishes gills Skin A pair of kidneys and lungs. |