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Q. No.The concept of chemical evolution is based on:
1.
crystallization of chemicals
2.
interaction of water, air, and clay under intense heat
3.
effect of solar radiation on chemicals
4.
possible origin of life by a combination of chemicals
under suitable environmental conditions
under suitable environmental conditions
Subtopic: Origin of Life: Chemical Evolution: 1 | Origin of Life: Chemical Evolution: 2 | Origin of Life |
89%
From NCERT
AIPMT - 2007
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Which one of the following pair of items correctly belongs to the category of organs mentioned against it?
| 1. | Thorn of Bougainvillea and tendrils of Cucurbita – Analogous organs |
| 2. | Nictitating membrane and blind spot in the human eye – vestigial organs |
| 3. | Nephridia of the earthworm and Malpighian tubules of cockroach - Excretory organs |
| 4. | Wings of a honey bee and wings of crow - Homologous organs |
Subtopic: Definition & Types of Evolution | Theory of Evolution & Lamarckism |
66%
From NCERT
AIPMT - 2008
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Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
| 1. | They could separate combinations of molecules from the surroundings |
| 2. | They were able to reproduce |
| 3. | They were partially isolated from the surroundings |
| 4. | They could maintain an internal environment |
Subtopic: Origin of Life: Chemical Evolution: 1 | Origin of Life: Chemical Evolution: 2 | Origin of Life |
AIPMT - 2008
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Select the correct statement from the following:
| 1. | Darwin variations are small and directionless |
| 2. | fitness is the end result of the ability to adapt and gets selected by nature |
| 3. | all mammals except whales and have seven cervical vertebrae |
| 4. | Mutations are random and directional |
Subtopic: Darwin's Theory | Summary of Darwin's Theory |
79%
From NCERT
AIPMT - 2007
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The finches of the Galapagos islands provide evidence in favour of:
1. special creation
2. evolution due to mutation
3. retrogressive evolution
4. biogeographical evolution
Subtopic: Darwin's Theory | Summary of Darwin's Theory |
84%
From NCERT
AIPMT - 2007
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Adaptive radiation refers to:
| 1. | adaptations due to geographical isolation |
| 2. | evolution of different species from a common ancestor |
| 3. | migration of members of a species to different geographical areas |
| 4. | power of adaptation in an individual to a variety of environments |
Subtopic: Theory of Evolution & Lamarckism |
From NCERT
AIPMT - 2007
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When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed:
1. divergent evolution
2. microevolution
3. co-evolution
4. convergent evolution
Subtopic: Definition & Types of Evolution |
81%
From NCERT
AIPMT - 2007
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Which one of the following amino acids was not found to be synthesized in Miller’s experiment?
| 1. | Glycine | 2. | Aspartic acid |
| 3. | Glutamic acid | 4. | Alanine |
Subtopic: Urey & Miller Experiment |
AIPMT - 2006
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An important evidence in favour of organic evolution is the occurrence of:
1. homologous and vestigial organs
2. analogous and vestigial organs
3. homologous organ only
4. analogous organ only
Subtopic: Concept of Organic Evolution: Evidence: 1 | Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence: 3 | Concept of Organic Evolution: Evidence |
63%
From NCERT
AIPMT - 2006
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Which one of the following is not a living fossil?
1. King crab
2. Sphenodon
3. Archaeopteryx
4. Peripatus
Subtopic: Concept of Speciation | Genetic Basis of Adaptation |
54%
AIPMT - 2006
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