Why don’t plants have specialized excretory systems like animals?

Question: Why don't plants have specialized excretory systems like animals?
- Keywords:
  animal,
  excretory,
  plant,
  system
Asked by Makaa to Beatrice, Charles, George, Kamal, Patricia on 26 Jan 2017.
- George Githinji answered on 26 Jan 2017:
  
  They do not need or have active functions compared to animals. They are also adapted separately and nature has given them what they need to survive given their respective roles within the ecosystem.

Question: Why don't plants have specialized excretory systems like animals?