Explain the difference between one celled organisms and many celled organisms?

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The differences between one-celled (or unicellular) and many-celled (or multicellular) organisms:

                                                   Unicellular                          ...

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The differences between one-celled (or unicellular) and many-celled (or multicellular) organisms:

                                                   Unicellular                                               Multicellular

1) Nomenclature:                  Also called Prokaryotes                            also called Eukaryotes

2) Origin history                   first life forms on planet                            evolved much later

3) Example                             Bacteria, Archaea                                animals, plants, humans

4) Complexity                      very little, simple life form                    more complex life forms

5) Nucleus                             Absent                                                     Present

6) Membrane bound nucleus            Absent                                                  Present

7) Mitochondria                                 Absent                                            Present

8) Nuclear Membrane               Absent                                                    Present

These are some of the major difference between these two cell-classes. There are more differences,esp.  due to presence of more complex molecules,tissues and organs in Eukaryotes, which make them more efficient as compared to prokaryotes.

For more differences and cell images kindly search for Prokaryotes and Eularyotes on your favorite search engine.

Good luck.

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