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The prebiotic atmosphere of the earth wa...

The prebiotic atmosphere of the earth was of a reducing nature. It was transformed into an oxidizing atmosphere of present day due to the emergence of

A

cyanobacteria

B

angiosperms

C

photosynthetic bacteria

D

eukaryotic algae

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The correct Answer is:
A
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AAKASH SERIES-EVOLUTION-EXERCISE - III( PREVIOUS AIPMT/NEET QUESTIONS)
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  2. Artifical selection to obtain cows yielding higher milk output repres...

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  3. Which of the following represents order of horse ?

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  4. Analogous structure are a result of (2016 - 1)

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  5. Which of the folloiwng structures is homologus to the wing of a bi...

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  6. Following are the two statements regarding the origin of life . Th...

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  7. Select the wrong statement :

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  8. The wings of a bird and the wings of an insect are

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  9. Industrial melansim in an example of :

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  10. Which of the following has the smallest brain capacity ?

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  11. Which one of the following in analogous structures ?

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  12. Forelimbs of cat , Lizard used in walking , fore limbs of whale used ...

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  13. According to Darwin , the organic evolution is due to.

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  14. Variations in gene frequecies within populations can occur by chance ...

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  15. The process by which organisms with different evolutionary history evo...

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  16. The eye of octopus and eye of cat show different patterns of of stru...

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  17. The extinct human who lived 1,00,000 to 40,000 years ago , in Eurpose...

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  18. What was the most significant trend in the evolution of modern man ...

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  19. Evolution of different species in a given area starting from a poi...

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  20. Which one of the following options gives one correct example each ...

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  21. What was the most significant trend in the evolution of modern man ...

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