EARLY PROKARYOTES 1: Microbial mats representing the earliest form of life on earth

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    Microbial mats as the earliest form of life on earth


Microbial also represent the earliest form of life on earth in which there is a record of fossil evidence of their presence starting about 3.5 billion years ago. This early life organism ( microbial mats) is a multi-layered sheet of micro organism ( prokaryotes) which include mostly bacteria,but also Archaea. 
Microbial mats are said to survive, thrive or inhabitate in different environment either on moisture environment or submerged environment and few of them can successfully adapt and survive in deserts. Prokaryotes in a microbial mats are held together by a glue-like sticky substance that they secrets called Extracellular Matrix. 
According to research, the first microbial mats are likely to obtained their energy from chemicals found near an hydrothermal vents.A hydrothermal vent is a fissure on the seafloor from which geothermally heated water discharge. 
     image of an hydrothermal vent

Microbial mats depends on hydrothermal vents for energy and chemical food, but the development of photosynthesis allow mats to spread more abundantly or to increase in number to outside of these environment by making use of the available energy source.

Do you know?
  Microbial mats are to be credited to be one of the organism which produce the atmosphere we are today, in which free oxygen is a vital components. Microbial mats may also said to have been the birthplace of more complex eukaryotic type of cell and of which all multicellular organisms are composed of . 

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