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Q. No.The atmosphere became oxidising with the appearance of earliest
1. Autotrophic bacteria
2. Autotrophic cyanobacteria
3. Land plants
4. Algae
Subtopic: Origin of Life |
69%
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Which one of the following gas was not present in free form at the time life originated on earth?
1. Ammonia
2. Oxygen
3. Hydrogen
4. Methane
1. Ammonia
2. Oxygen
3. Hydrogen
4. Methane
Subtopic: Cosmic Evolution | Origin of Life |
93%
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The theory of spontaneous generation says that
1. Life originated from the decaying and rotting matter like straw, mud etc
2. Life came on the earth from outerspace
3. Life comes from pre-existing life only
4. Life started with the replication of self replicating metabolic capsules
1. Life originated from the decaying and rotting matter like straw, mud etc
2. Life came on the earth from outerspace
3. Life comes from pre-existing life only
4. Life started with the replication of self replicating metabolic capsules
Subtopic: Other Theories of Origin of Life | Origin of Life |
82%
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Louis Pasteur by careful experimentation demonstrated that/the
1. Phenomenon of chemical evolution
2. There is spontaneous generation of life
3. Life comes from pre-existing life
4. Abiogenic origin of life
1. Phenomenon of chemical evolution
2. There is spontaneous generation of life
3. Life comes from pre-existing life
4. Abiogenic origin of life
Subtopic: Examples of Chemical Evolution | Other Theories of Origin of Life |
82%
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The first non-cellular form of life could have originated about ____________ years ago
1. 3 million
2. 2 million
3. 3 billion
4. 2 billion
1. 3 million
2. 2 million
3. 3 billion
4. 2 billion
Subtopic: Origin of Life |
57%
From NCERT
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Which ones are the most essential for origin of life?
1. Enzymes
2. Proteins
3. Carbohydrates
4. Nucleic acids
1. Enzymes
2. Proteins
3. Carbohydrates
4. Nucleic acids
Subtopic: Examples of Chemical Evolution | Urey & Miller Experiment |
62%
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Presence of NaCl in body fluid indicates that life originated in
1. Primitive ocean
2. Rain water lakes
3. Salt solution
4. All of these
1. Primitive ocean
2. Rain water lakes
3. Salt solution
4. All of these
Subtopic: Origin of Life |
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Origin of life from nonliving matter is known as
1. Coacervates
2. Abiogenesis
3. Biogenesis
4. None of these
1. Coacervates
2. Abiogenesis
3. Biogenesis
4. None of these
Subtopic: Examples of Chemical Evolution | Origin of Life |
77%
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During the origin and evolution of life, key biological compounds were progressively synthesised in ocean with the help of energy obtained from
1. Lightening
2. Ultraviolet light
3. Lightening as well as ultra-violet light
4. Combustion of certain compounds
1. Lightening
2. Ultraviolet light
3. Lightening as well as ultra-violet light
4. Combustion of certain compounds
Subtopic: Cosmic Evolution | Examples of Chemical Evolution |
57%
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Which of the type of respiration probably arose first?
1. Aerobic as it release more energy
2. Anaerobic as it releases more energy
3. Aerobic as it is more complex
4. Anaerobic as early atmosphere contained no free from of oxygen
1. Aerobic as it release more energy
2. Anaerobic as it releases more energy
3. Aerobic as it is more complex
4. Anaerobic as early atmosphere contained no free from of oxygen
Subtopic: Origin of Life |
76%
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