My best guess is when anything reproduces mutations may occur in the DNA. Some mutation happened in the DNA and the unicellular organism to start replicating itself. (We see call this mitosis) The mutation turned out to be a good thing and helped the organism survive, later generations through more mutations started orientating the cells into a specific shape... making a whip like tail so it could propel itself forward and so on and so on
Unicellular organisms evolved first; and from them evolved the multicellular organisms. But that leads onto another question as to why multicellular organisms evolved.
Eubacteria are the most common unicellular organisms; they are found everywhere on Earth.
Unicellular- organisms include bacteria, the most numerous organisms on Earth. Multicellular- organisms are composed of many sells and they lie
Eubacteria are unicellular organisms that are found everywhere.
Answer is not exactly known, as origin of first unicellular organisms is unknown. First multicellular organisms appeared in late Precambrian. Look up Burgess Shale for details.
Bacteria, the most numerous organisms on Earth , are unicellular organisms - just had this question on a homework
No, the majority of organisms on Earth are unicellular. But we multicellular organisms are the more interesting kind. Multicellular organisms rule!
It is said, with good supporting evidence, that the first organisms on Earth were probably single-celled prokaryotes that were probably genetically similar to the organisms belonging to the domain Archaea. It was about 3 billion years ago.
Organic molecules are the part of life we are living in earth... it is common for all level of organisms on earth.
they have lived for up to millions of years
Unicellular- organisms include bacteria, the most numerous organisms on Earth. Multicellular- organisms are composed of many sells and they lie
Most of the unicellular organisms reproduces asexually.