The level of organization of Amoeba and Euglena cell is ________?

Explanation

In unicellular organisms, the single cell performs all life functions. Examples are Amoeba, Euglena
Life can be organised into several different levels of function and complexity.

These functional levels are: cells, tissues, organs, systems and organisms.
Every living thing is made up of a cell or a number of cells.

There is an explanation video available .