Question

which list shows levels of organization of an organism in hierarchical order from left to right, from the least complex to the most complex?
o organism, organ, organ system, cell, tissue
o organism, organ system, organ, tissue, cell
o cell, tissue, organ, organ system, organism
o cell, tissue, organ system, organ, organism

Explanation:

The levels of organization in an organism from least to most complex are cell (basic unit), tissue (group of cells), organ (group of tissues), organ system (group of organs), and organism (entire living being). So we check each option against this hierarchy.

Answer:

cell, tissue, organ, organ system, organism