When did plants apear on the earth?
When was the first plant appeared on earth
Scientists believe that the first plants were algae like and lived in water about two to three thousand million years ago during the precambrian time. This was between 500 and 600 million years ago. But it was not until about 150 to 200 million years later that plant life became abundant on land and evidence of this can be found in rocks of the so called carboniferous and Devonian period. The first plants that began to encroach the land had to live in shallow water but they had roots and could take in the carbon dioxide gas from the primitive atmosphere.
The first true land plants were a group which are called ‘psilophytes’ The first trees appeared in Devonian period, although they were not much like the trees you are familiar with today. These trees with the group name ‘lepododendrons’ did not produce flowers and in fact it was not until 135 million years ago that the first flowring plants became abundant. Morden exa. of very primitive land plants are ferns and mosses. About 350 million years ago however land plants became so abundant that their remain have left us with the deposits of coal petroleum and natural gasses which have become an indispensable part of our daily life today.