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Q. No.Theory of 'Natural Selection' proposed by
1. Charles Darwin
2. James Hutton
3. Charles Lyell
4. Herbert Spencer
Subtopic: Darwin's Theory |
94%
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A population of Rothschild’s giraffe lives in the woodlands of Uganda with trees of varying heights. Following a flood in the area, all shorter plants were uprooted but taller trees survived the flood. After several generations, it is observed that the giraffes inhabiting the woodlands have longer necks than the giraffes living in the same area prior to the flood. Which of the following evolutionary phenomenon has occurred in Rothschild’s giraffes?
1. Extreme selection
2. Stabilizing selection
3. Disruptive selection
4. Directional selection
1. Extreme selection
2. Stabilizing selection
3. Disruptive selection
4. Directional selection
Subtopic: Theory of Evolution & Lamarckism | Natural Selection |
55%
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Following is the digrammatic representation of Miller's experiment. Select the correct option regarding correct labelling
| A | B | C | D | |
| 1. | Electrodes | \(CH_4+NH_3+H_2+ H_2O\) | Condenser | Vaccum pump |
| 2. | Electrodes | \(NH_3+ H_2O+CH_4\) | Hot water | Trap |
| 3. | Electrodes | \(NH_3 + CH_4\) | Steam | Trap |
| 4. | Electrodes | \(NH_3 + CO_2 +H_2 + H_2O\) | Hot water | Vaccum |
Subtopic: Urey & Miller Experiment |
89%
From NCERT
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Which of the following is not true about coacervates?
1. They are solely protein aggregates
2.They do not have lipid membrane and cannot reproduce
3. The initial work on coacervates was done by Oparin
4. They are protobionts with polysaccharides proteins and water
1. They are solely protein aggregates
2.They do not have lipid membrane and cannot reproduce
3. The initial work on coacervates was done by Oparin
4. They are protobionts with polysaccharides proteins and water
Subtopic: Examples of Chemical Evolution |
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Extra-terrestrial origin of life was proposed by theory of
1. Catastrophism
2. Spontaneous Generation
3. Special Creation
4. Panspermia
1. Catastrophism
2. Spontaneous Generation
3. Special Creation
4. Panspermia
Subtopic: Other Theories of Origin of Life |
58%
From NCERT
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Which of the following is incorrect about coacervates in abiogenic origin of life?
1, They were partially isolated from the surroundings
2. They could maintain an internal environment
3. They were able to reproduce
4. They could separate combination of molecules from the surroundings
1, They were partially isolated from the surroundings
2. They could maintain an internal environment
3. They were able to reproduce
4. They could separate combination of molecules from the surroundings
Subtopic: Cosmic Evolution | Other Theories of Origin of Life |
53%
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Miller's experiment provided evidence for the theory of
1. Special creation
2. Abiogenesis
3. Biogenesis
4. Chemical evolution
1. Special creation
2. Abiogenesis
3. Biogenesis
4. Chemical evolution
Subtopic: Examples of Chemical Evolution | Urey & Miller Experiment |
73%
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Select the wrong pair:
| 1. | Haldane | : | Hot dilute soup |
| 2. | Oparin | : | Coacervate |
| 3. | Fox | : | Microspheres |
| 4. | Spallanzani | : | Abiogenesis |
Subtopic: Examples of Chemical Evolution | Other Theories of Origin of Life |
56%
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The first cellular form of life did not possibly originates till about
1. 3 billion years ago
2. 2000 million years ago
3. 4.5 billion years ago
4. 50,000 years ago
1. 3 billion years ago
2. 2000 million years ago
3. 4.5 billion years ago
4. 50,000 years ago
Subtopic: Other Theories of Origin of Life |
68%
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The theory of Special Creation has three connotations. Which of the following is not true?
1. The diversity was always the same since creation and will be the same in future also
2. Earth is about 4000 years old
3. All living organisms that we see today were created as such
4. There has been gradual evolution of life forms
1. The diversity was always the same since creation and will be the same in future also
2. Earth is about 4000 years old
3. All living organisms that we see today were created as such
4. There has been gradual evolution of life forms
Subtopic: Definition & Types of Evolution | Other Theories of Origin of Life |
80%
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