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NEET Sample Paper NEET Sample Test Paper-13

  • question_answer
    Age of fossils in the past was generally determined by radiocarbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary periods for different groups of organisms includes

    A)  Study of the conditions of fossilization

    B)  Electron spin resonance (ESR) and fossil DNA

    C)  Study of carbohydrates/proteins in rocks

    D)  Study of carbohydrates/proteins in fossils

    Correct Answer: B

    Solution :

     According to Oparin, the atmosphere of calmative earth was reducing because its atoms were most numerous and most reactive. Free oxygen was not present in significant amount.


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