1. Tardigrade
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  4. First living organisms were

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Q. First living organisms were

UP CPMTUP CPMT 2008

Solution:

The first living organisms were single celled procaryotes (= prokaryotes). They had naked DNA, protein forming machinery, mode of liberation of energy, its storage and utilisation. The first living beings obtained organic substances from outside for building up their body and liberation of energy. They were thus chemoheterotrophs or organisms that obtain organic substances from outside for their nutrition. Respiration was anaerobic.