ORIGIN OF PLANTS
It is believed that there was a time when there were no plants on the Earth . According to the scientists , the protoplasm , the living material that is found in both plants and animals , appeared on the Earth in the form of tiny specks , hundreds of millions of years ago.
These protoplasm specks that became plants had one cell in the beginning and it is only later , they formed groups of cells . they grew in water and we call them 'algae'.
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algae |
Most of the plants that we find today are evolved from algae . But there are some which came out of sea and developed rootlets which could anchor them in the soil , along with little leaves . These plants are called as mosses and ferns
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Mosses |
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Ferns |
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Tree fern |
Earlier , the reproduction in plants was either by simple cell division or by means of spores , little dust like cells resembling seeds . In course of time , some of these plants developed flowers that produced true seeds and thus the process goes on in the nature .
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