EASY
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What was the process that changed the atmosphere of the earth and resulted in diversities in evolution of life?

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Important Questions on Evolution

HARD
Biology>Genetics and Evolution>Evolution>Origin of Life
Write briefly the chemical origin of life on earth.
HARD
Biology>Genetics and Evolution>Evolution>Origin of Life
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
Biology>Genetics and Evolution>Evolution>Origin of Life
What are the coacervates?
EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
Which of the following is an example of convergent evolution?
EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
Theory of Biogenesis was proposed by
MEDIUM
Biology>Genetics and Evolution>Evolution>Origin of Life

Read the statements and identify the right option:

StatementI: Due to continental drift pouched mammals of Australia survived.
Statement II: South America joined North America due to continental drift.

EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
What is the theory of spontaneous generation? Name the scientist who dismissed it.
MEDIUM
Biology>Genetics and Evolution>Evolution>Origin of Life
The origin of life on earth is known as 
EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
The primary gases that were used by Miller in his experiment are
EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
Which of the following gas was absent in the atmosphere at the time of origin of life?
MEDIUM
Biology>Genetics and Evolution>Evolution>Origin of Life

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:

EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask
HARD
Biology>Genetics and Evolution>Evolution>Origin of Life
Describe S.L Miller's experiment. Comment on the observations he made and his contribution towards the origin of life on Earth.
MEDIUM
Biology>Genetics and Evolution>Evolution>Origin of Life
Which theory states, "Life arises from pre-existing organisms"?
HARD
Biology>Genetics and Evolution>Evolution>Origin of Life

Describe the Oparin Haldane theory of Origin of life.

EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
Draw a neat labelled diagram of Miller's experiment.
EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
Explain the concept of ‘struggle for existence’.
MEDIUM
Biology>Genetics and Evolution>Evolution>Origin of Life
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?
EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
After about how many years of formation of earth, life appeared on this planet?
EASY
Biology>Genetics and Evolution>Evolution>Origin of Life
Who proposed that the first form of life could have come from pre-existing non-living organic molecules?