In the solar system of the milky-way galaxy, the earth was supposed to have been formed about:
1. 20 billion years back 2. 10 billion years back
3. 4.5 billion years back 4. 3.0 billion years back
Subtopic:  Origin of Life |
 82%
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Which theory, regarding the origin of life, is alternatively also called “panspermia”?

1.Special Creation2.Spontaneous Generation
3.Cosmozoan Theory4.Biochemical Evolution

Subtopic:  Other Theories of Origin of Life |
 67%
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The theory of spontaneous generation stated that:

1. life arose from living forms only
2. life can arise from both living and non-living
3. life can arise from non-living things only
4. life arises spontaneously, neither from the living nor from the non-living

Subtopic:  Other Theories of Origin of Life |
 63%
From NCERT
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Oparin of Russia and Haldane of England proposed that:
I: The first form of life could have come from pre-existing non-living organic molecules (e.g. RNA, protein, etc.)
II: The formation of life was preceded by chemical evolution, i.e., the formation of diverse organic molecules from inorganic constituents.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Origin of Life |
 89%
From NCERT
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In 1953, S. L. Miller created primitive earth conditions in the laboratory and gave experimental evidence for the origin of the first form of life from pre-existing non-living organic molecules. The primitive earth conditions created include:

1. low temperature, volcanic storms, an 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:  Urey & Miller Experiment |
 89%
From NCERT
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Consider the two statements:
I: Fitness, according to Darwin, refers ultimately and only to reproductive fitness. 
II: Those who are a better fit in an environment, leave more progeny than others.
 
1. Both Statement I and Statement II are correct and Statement II explains Statement I.
2. Statement I is correct and Statement II is incorrect.
3. Statement I is incorrect and Statement II is correct.
4. Both Statement I and Statement II are correct but Statement II does not explain Statement I.
Subtopic:  Darwin's Theory |
 89%
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Name the naturalist who worked in the Malay Archipelago and had also come to conclusions similar to Darwin around the same time:
1.Georges Cuvier2.Lyell
3.Hugo de Vries4.Alfred Russell Wallace
Subtopic:  Other Theories of Origin of Life | Darwin's Theory |
 90%
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Palaeontological evidence for evolution refers to the:

1. development of the embryo 2. homologous organs
3. fossils 4. analogous organs
Subtopic:  Palentological Evidences of Evolution |
 91%
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Fossils are generally found in:

1.Sedimentary rocks2.Igneous rocks
3.Metamorphic rocks4.Any type of rock

Subtopic:  Palentological Evidences of Evolution |
 91%
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The “Biogenetic Law” was given by :

1.von Baer2.Ernst Haeckel
3.Hugo de Vries4.Theodosius Dobzhansky

Subtopic:  Concept of Speciation | Concept of Organic Evolution: Evidence |
 70%
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