Until recently, little evidence existed for multicellular organisms before a billion years ago.
The cells of a multicellular organism are not all the same.
Most multicellular organisms can be seen without using a microscope.
Only 600 million years ago did evolution hit on a system for making multicellular organisms like animals and plants.
Has someone narrowed down the common ancestors of all multicellular organisms to 3?
For a long time, the land remained barren of multicellular organisms.
Cells in complex multicellular organisms form thousands of different shapes.
Vitamins are essential for the normal growth and development of a multicellular organism.
Only a few hundred million years later, multicellular organisms.
Cell migration is a central process in the development and maintenance of multicellular organisms.
Słownik biologiczny