Origin of Life & Early Cellular Evolution — NEET Biology
📚 Practice ConceptPolysaccharides, etc.). These capsules reproduced their molecules perhaps. The first cellular form of life did not possibly originate till about 2000 million years ago. These were probably single-cells. All life forms were in water environment only. This version of a biogenesis, i.e., the first form of life arose slowly through evolutionary forces from non-living molecules is accepted by majority. However, once formed, how the first cellular forms of life could have evolved into the complex biodiversity of today is the fascinating story that will be discussed below.
Assertion (A): The first cellular form of life definitely did not originate before 2000 million years ago. Reason (R): Cellular life forms have organized nucleus and membrane-bound organelles.
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