Example: Human excretory system
The characteristics of the excretory system are :
1. It is an organ system that purifies the blood and removed the waste materials from the body.
2. Organs like kidney act as filters and remove out the toxins.
3. The excretion is done mainly in the form of uric acid, urea, and large amounts of water.
4. It maintains internal chemical homeostasis.
5. It protects the body from damage from toxic materials.
6. It is responsible for osmoregulation and maintenance of water and salt concentration in the body.