What is the most complex level of environmental organization?

What are the levels of organization in a multicelluar organism from the simplest level to the most complex level?

• Answer:

  In a unicellular (single-celled) organism, one cell carries out all of the functions of life. In contrast, most cells in a multicellular (many celled) organism are specialized to perform one or more functions , and the various specialized cells work together for the good of the entire organism. Thus multicellular organisms have various levels of organization within them , the simplest of which is the cell. Multicellular organism have the following five levels of organization ranging from simplest to most complex: 1.cells 2. tissues 3. organs 4. organ systems 5. organisms Edit from nofear: If you're taking the same test I am, it's. d. cell, tissue, organ, organ system