multiple - choice question which level is the smallest unit of life? organ organ system tissue cell

multiple - choice question which level is the smallest unit of life? organ organ system tissue cell
Answer
Brief Explanations:
In biology, cells are the basic structural and functional units of life. Tissues are groups of similar cells, organs are made up of different tissues, and organ - systems are composed of multiple organs. So the cell is the smallest unit of life among the given options.
Answer:
D. cell