Which option shows the correct order of organization within multicellular organisms from least complex to most complex

Answer 1

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

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

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