which option shows the correct order of organization within multicellular organisms (from least complex to most complex)

Answer 1

The correct order of organization within multicellular organisms, from least complex to most complex, is as follows:

1. Cells - The basic unit of life.
2. Tissues - Groups of similar cells that perform a specific function.
3. Organs - Structures composed of different types of tissues working together to perform specific functions.
4. Organ Systems - Groups of organs that work together to carry out complex functions.
5. Organism - A complete living being made up of various organ systems working in harmony.

So the order is: Cells → Tissues → Organs → Organ Systems → Organism.