Answer:
Cells.
Step-by-step explanation:
- In simple words cell is the basic structural and functional unit of all organisms.
- Cells have existed as independent units of life(unicellular organisms like various bacteria) and also form colonies or tissues and organs in higher plants and animals.
- The word cell is from Latin which means a small room. Which means a basic structural, functional and fundamental unit of life.
Result: Cell is the smallest unit of life.