EASY
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Which of the following mixture of gases was used by Miller in his experiment?

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Important Questions on Evolution

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What is the theory of spontaneous generation? Name the scientist who dismissed it.
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The idea of survival of the fittest was proposed by
HARD
Write briefly the chemical origin of life on earth.
MEDIUM
Following are the two statements regarding the origin of life:

(i) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.

(ii) The first autotrophic organisms were the chemoautotrophs that never released oxygen.

Of the above statements which one of the following options is correct?
MEDIUM
According to Hugo de Vries, the mechanism of evolution is
EASY
The primary gases that were used by Miller in his experiment are
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Which of the following gas was absent in the atmosphere at the time of origin of life?
MEDIUM
Which theory states, "Life arises from pre-existing organisms"?
EASY
From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask
EASY
Variations caused by mutation, as proposed by Hugo de Vries, are:
HARD
Describe Oparin-Haldane theory on the origin of life.
MEDIUM

Assertion (A): There is a sufficient reason to believe that first cells on the planet lived in an atmosphere lacking oxygen.
Reason (R): Thus even all living organisms retain the enzymatic mechanism to completely oxidise glucose without the help of oxygen. 

The correct option among the following is:

HARD
Describe S.L Miller's experiment. Comment on the observations he made and his contribution towards the origin of life on Earth.
EASY
Jean-Baptiste Lamarck explained evolution based on:
HARD
Which of the following is the correct sequence of events in the origin of life?
(i) Formation of protobionts
(ii) Synthesis of organic monomers
(iii) Synthesis of organic polymers
(iv) Formation of DNA-based genetic systems
EASY
After about how many years of formation of earth, life appeared on this planet?
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Who proposed that the first form of life could have come from pre-existing non-living organic molecules?