Which was absent in the atmosphere at the time of origin of life?

1. NH3

2. H2   

3. O2   

4. CH4

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
 89%
From NCERT
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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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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 |
 82%
From NCERT
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What is genetic equilibrium?

(1) When all the alleles of a gene are present in a population in equal frequencies

(2) When the number of heterozygotes in a population are equal to the number of either of the homozygote

(3) When the number of heterozygotes in a population are equal to the number of either of the homozygote

(4) When the frequency of particular genes or alleles remain constant in a population through generations

Subtopic:  Population Genetics |
 76%
From NCERT
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The presence of the monotremes and marsupials in the Australian continent can be explained by:

1.  Convergent evolution

2.  Adaptive radiation

3.  Punctuated equilibrium

4.  Gene flow 

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 63%
From NCERT
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Which of the following would lead to deviation from Hardy-Weinberg equilibrium?

1. Random mating

2. Lack of mutations

3. No gene flow or gene migration

4. Natural selection

Subtopic:  Hardy Weinberg Law: 1 | Hardy Weinberg Law |
 60%
From NCERT
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The now extinct reptile group that evolved into mammals was:

1. Therapsids

2. Dinosaurs

3. Thecodants

4. Sauropsids

Subtopic:  Palentological Evidences of Evolution |
 52%
From NCERT
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Identify the correct statement:

1. Dryopithecus was more man like than Ramapithecus

2. Homo Habilis probably did not eat meat

3. Homo Erectus had a cranial capacity of around 800 cc

4. Agriculture came around 18000 years ago

Subtopic:  Evolution Prior to Ape Man: 1 | Evolution Prior to Ape Man |
 71%
From NCERT
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Most fossils are found in:

1. Granite

2. Sedimentary rocks

3. Lava flows

4. Black soil

Subtopic:  Palentological Evidences of Evolution |
 96%
From NCERT
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Darwin believed that certain parts of the body get larger and more complex through the generations because they :

1. are used more extensively than other parts 

2. contribute to greater reproductive success

3. are pre-determined to do so 

4. are most similar to God's perfection 

Subtopic:  Darwin's Theory |
 62%
From NCERT
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