Question

the diagram is a model to represent the hierarchical organization in multicellular organisms.
order the tiles so that they are arranged from the simplest level on the left to the most complex level on the right.
organ system
tissue
organ
cell

Explanation:

In biological organization, cells are the basic unit. Tissues are groups of similar cells. Organs are made of different tissues. Organ systems are groups of organs working together. So the order from simplest to most complex is cell → tissue → organ → organ system.

Answer:

cell, tissue, organ, organ system