EASY
Earn 100

Phylogeny means:

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Important Questions on Evolution

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
HARD
Describe Oparin-Haldane theory on the origin of life.
MEDIUM

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
Theory of Biogenesis was proposed by
MEDIUM
Which theory states, "Life arises from pre-existing organisms"?
EASY
What is the theory of spontaneous generation? Name the scientist who dismissed it.
EASY
Mention two assumptions of oparin and Haldane with reference to 'origin of Life'.
EASY
The primary gases that were used by Miller in his experiment are
EASY
Which of the following gas was absent in the atmosphere at the time of origin of life?
EASY
Which of the following is an example of convergent evolution?
EASY
From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask
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
Write briefly the chemical origin of life on earth.
EASY
Draw a neat labelled diagram of Miller's experiment.
HARD
Describe the Oparin theory regarding the origin of life.
EASY
Sketch and label Miller's experiment.
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?
EASY
After about how many years of formation of earth, life appeared on this planet?
EASY
Who proposed that the first form of life could have come from pre-existing non-living organic molecules?