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The first chemicals formed on the earth ...

The first chemicals formed on the earth were

A

DNA, RNA and uncleotides

B

Water, Ammonia, Methane

C

Salt, Sugar, Proteins

D

Oxygen, CFC, Ozone

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CHETANA PUBLICATION-ORIGIN AND EVOLUTION OF LIFE -Exercise
  1. Protobiogenesis refers as .....................

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  2. According to the ........................, all the living beings on th...

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  3. The first chemicals formed on the earth were

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  4. The primitive sea containing molecules of organic substance free of .....

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  5. What is considered as a landmark in the origin of life ?

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  6. The first form of life on earth consisting of nucleic acid along with ...

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  7. Name the island where Darwin visited while formulating the theory of N...

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  8. The prebiotic atmosphere of the earth was............

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  9. The sum total of genes present in all individuals of interbreeding or ...

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  10. Which of the following theory states that, the life originated on the ...

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  11. The struggle between organisms of different species is called............

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  12. Recently an almost complete lower jaw of a Dryopithecus has been obtai...

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  13. The cranial capacity of Cro-Magnon man was about...........

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  14. The phenomenon of industrial melanism demonstrates-

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  15. The theory of natural selection was proposed by .

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  16. Mutation theory was proposed by which scientist?

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  17. Name of ship by which Darwin travelled during his famous voyages.

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  18. On which plant did Hugo de Vries work during his experimentations?

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  19. The struggle between the organisms of same species is called : ..........

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  20. ...................... is defined as a connecting link between amphibi...

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