That depends on which organism. Generally, an organism is more complicated than an organ, but if the organism is unicellular (has one cell) then it could be more simple. Since one celled organisms don't have individual organs, then the anwer is that organisms are more complicated than organs.
By single organisms I assume you mean unicellular organisms. That is one of the more well accepted theories involving the origin of multicellular organisms. It is, however, far being definitively proven.
Some do, they cause by mutations. We are complex organisms that started off as unicellular organisms. So humans do.
Simple and complex organisms have some similar characteristics. Some of these include physical vitality (will to live), reproductions, and similar life cycles.
Initially on earth there were only very simple single-celled organisms in what would become earth's oceans, literally everything on earth most likely can be traced back to the first one(s).
How are simple and complex organisms different
Organisms are classified as simple if they only have one cell such as bacteria, and complex organisms have multiple cells that function together to keep the organism alive and maintai homeostasis.
Definition for AUTOTROPHIC :Of or relating to organisms (as green plants) that can make complex organic nutritive compounds from simple inorganic sources by photosynthesis.
multicellular organisms
cells to tissues to organs to organ systems to organisms... cells to tissues to organs to organ systems to organisms...
Not necessarily, there can be many similarities and differences within a genus
Complex organisms evolved from simple organisms, so simple organisms evolved first.
Simple Organism some simple organisms are made of single cell. Others are made of many cells that are similar Complex organisms in complex organisms, cells are organized into tissues, which make up organs. Organs form organ systems.
The common building blocks of simple and complex organisms are called cells. They are the smallest structural unit of an organism.
Arthropods are complex organisms. They are made up of cells, tissues, organs, and organ systems.
They're both organisms, right?
Organisms are classified as simple if they only have one cell such as bacteria, and complex organisms have multiple cells that function together to keep the organism alive and maintai homeostasis.
My wife is complex. And she's an animal. But I don't think I'd call her an animal to her face...
Less complicating factors than trying to study complex organisms.
Archaebacteria are some of the oldest organisms living on Earth. They are considered simple because of their external body structure.
they are nothing alike you idiot....one has one machine and the other has two...stupid
They both use wheels. They're both complex machines assembled out of simple machines.
advantages of human beings are complex organisms