Darwin in his 'Natural Selection Theory' did not believe in any role of which one of the following in organic evolution?

1. Discontinuous variations

2. Parasites and predators as natural enemies

3. Survival of the fittest

4. Struggle for existence

Subtopic:  Darwin's Theory |
 59%
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NEET 2023 - Target Batch - Aryan Raj Singh
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In recent years, DNA sequences (nucleotide sequence) of mtDNA and Y-chromosomes were considered for the study of human evolution, because

1. they can be studied from the samples of fossil remains

2. they are small and, therefore, easy to study

3. they are uniparental in origin and do not take part in recombination

4. their structure is known in greater detail

 55%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which one is irrelevant to evolution of man? 

1. Perfection of hand for tool making

2. Change of diet from hard nuts/roots to soft food

3. Increased ability to communicate or develop community behaviour

4. Loss of tail

Subtopic:  Introduction to Human Evolution |
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NEET 2023 - Target Batch - Aryan Raj Singh
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Study of fossils is 

1. palaeontology

2. herpetology

3. saurology

4. organic evolution

Subtopic:  Palentological Evidences of Evolution |
 97%
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NEET 2023 - Target Batch - Aryan Raj Singh
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An important evidence in favour of organic evolution is the occurrence of 

1. analogous and vestigial organs

2. homologous organs only

3. homologous and analogous organs 

4. homologous and vestigial organs

Subtopic:  Concept of Organic Evolution: Evidence: 1 | Concept of Organic Evolution: Evidence |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The earliest fossil form in the phylogeny of horse is

1. Merychippus

2. Mesohippus

3. Eohippus

4. Equus

Subtopic:  Palentological Evidences of Evolution |
 53%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which is not a vestigial part in humans ? 

1. Segmental muscles of abdomen

2. Finger nails

3. Third molar

4. Coccyx

Subtopic:  Concept of Organic Evolution: Evidence: 3 | Concept of Organic Evolution: Evidence |
 57%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which one of the following statements is correct?

1. stem cells are specialised cells

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

 63%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Evolutionary convergence is the development of 

1. common set of characters in the group of different ancestry

2. dissimilar characters in closely related groups

3. common set of characters in closely related groups

4. random mating

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 71%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The finches of Galapagos islands provide an evidence in favour of

1. special creation

2. evolution due to mutation

3. retrogressive evolution 

4. biogeographical evolution 

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 83%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh