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Theory of Abiogenesis

Choose the co...

Question

Choose the correct answers from the alternatives given .
The first autotrophs probably were .......... and produced ..........

A

photosynthetic, oxygen

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B

photosynthetic, no oxygen

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C

eukaryotic, oxygen

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D

eukaryotic, no oxygen

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Solution

The correct option is A photosynthetic, oxygen
The first autotrophs were bacteria who used photosynthesis to make their food and as the photosynthesis began atmosphere was enriched with oxygen. So, the correct option is "photosynthetic, oxygen".

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