Q1 of 52 Page 48

What were the characteristics of life forms that had been fossilised?

The characteristic of life forms that had been fossilised are as follows:

i. The early fossils were simple life forms which evolved into complex life forms later.


ii. Fossilised organisms hard body surface which allowed them to get preserved and fossilised.


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In 1953 S. L. Miller created primitive earth conditions in the laboratory and gave experimental evidence for origin of first form of life from preexisting non-living organic molecules. The primitive earth conditions created include:

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Variations during mutations of meiotic recombination are:

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Did aquatic life forms get fossilised? If yes where do we come across such fossils?

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What are we referring to when we say 'simple organisms' or 'complex organisms'?