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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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

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 |
 78%
From NCERT
AIPMT - 2007
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

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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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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Which one of the following statements is correct?

1. Stem cells are specialized
2. There is no evidence of the existence of gills during embryogenesis of mammals
3. All plant and animal cells are totipotent
4. Ontogeny repeats phylogeny

Subtopic:  Embryological Evidence of Evolution |
 59%
AIPMT - 2007
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NEET 2023 - Target Batch - Aryan Raj Singh
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What is common to whales, seals, and sharks?

1. Seasonal migration

2. Thick subcutaneous fat

3. Convergent evolution

4. Homeothermy

Subtopic:  Definition & Types of Evolution |
 56%
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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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

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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NEET 2023 - Target Batch - Aryan Raj Singh
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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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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh