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Q. No.
The theory of spontaneous generation was conclusively disproved with careful experimentation by:
1. Louis Pasteur
2. Spallanzani
3. Francesco Redi
4. Miller and Urey
Subtopic:  Origin of Life |
 89%
Level 1: 80%+
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Evolution of life shows that life forms had a trend of moving from:
1. land to water
2. dry land to wet land
3. fresh water to sea water
4. water to land
Subtopic:  Origin of Life |  A BRIEF ACCOUNT OF EVOLUTION |
 94%
Level 1: 80%+
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What conditions of the primeval earth, as proposed by Oparin, were simulated in his experiment by S. L. Miller in 1953?
1. low temperature, volcanic storms, atmosphere rich in oxygen
2. low temperature, volcanic storms, reducing atmosphere
3. high temperature, volcanic storms, non-reducing atmosphere
4. high temperature, volcanic storms, reducing atmosphere containing CH4, NH3 etc.
Subtopic:  Origin of Life |
 91%
Level 1: 80%+
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Panspermia theory suggests that:
1. Life originated independently at multiple locations on Earth.
2. Life on Earth was seeded by meteorites and comets.
3. Life evolved from simple to complex forms solely through natural selection.
4. Life exists only on Earth, and all life forms have a common origin.
Subtopic:  Other Theories of Origin of Life | Origin of Life |
 84%
Level 1: 80%+
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Consider the given two statements:
Assertion (A): According to Oparin, the chemical composition of the primordial environment was oxidising, consisting of oxygen and ozone and excluding methane, ammonia, free hydrogen and water vapour.
Reason (R): Oparin of Russia proposed that the first form of life could have come from pre-existing non-living organic molecules and that formation of life was preceded by chemical evolution.
  
1. (A) is False but (R) is True
2. (A) is True but (R) is False
3. Both (A) and (R) are True and (R) is the correct explanation of (A)
4. Both (A) and (R) are True but (R) is not the correct explanation of (A)
Subtopic:  Origin of Life |
 82%
Level 1: 80%+
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