Why is an elodea cell not an organism? is it considered non living?

A n  - e l o d e a  - c e l l -  i s --  a p a r t  - o f -  a  - b i g g e r  - o r g a n i s m   - a n d -  c a n n o t  - f u n c t i o n  - o n  - i t s  -  o w n.

It is part of one thing that helps the entire plant to thrive. It is considered non-living. 

(Sorry I had to space the first line out. The moderator says my answer contains inappropriate words and there are not even any bad words in my answer lol)