Presence of gills in the tadpole of frog indicates that

1. fishes were amphibian in the past

2. fishes evolved from frog-like ancestors

3. frogs will have gills in future

4. frogs evolved from gilled ancestors

Subtopic:  Embryological Evidence of Evolution |
 72%
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'Golden age of dinosaurs'/Age of reptiles was

1. Mesozoic                                 

2. Coenozoic  

3. Palaeozoic                                 

4. Psychozoic  

Subtopic:  Palentological Evidences of Evolution |
 63%
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Reason of diversity in living being is

1. mutation 

2. gradual change

3. long term evolutionary change

4. short term evolutionary change

Subtopic:  Theory of Evolution & Lamarckism | Darwin's Theory |
 54%
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Which of following is closest relative of man?

1. Chimpanzee 

2. Gorilla

3. Orangutan

4. Gibbon

Subtopic:  Classification of Primates |
 74%
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When two species of different geneology come to resemble each other as a result of adaptation, the phenomenon is termed

1. divergent evolution

2. micro-evolution

3. co-evolution

4. convergent evolution

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 77%
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Theory of natural selection dwells on 

1. role of environment in evolution

2. natural selection acting on favourable variations

3. changes in gene complex resulting in heritable variations

4. None of the above

Subtopic:  Darwin's Theory |
 59%
From NCERT
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Which one of the following options gives one correct example each of convergent evolution and divergent evolution?

 Convergent evolution  Divergent evolution
1. Eyes of Octopus and mammals  Bones of forelimbs of vertebrates
2. Thorns of Bougainvillea and tendrils of Cucurbita  Wings of butterflies and birds
 3. Bones of forelimbs of vertebrates  Wings of butterfly and birds
4. Thorns of Bougainvillea and tendrils of Cucurbita  Eyes of Octopus and mammals

 

Subtopic:  Concept of Organic Evolution: Evidence: 1 | Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 78%
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The extinct human who lives 100000 to 40000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was

1. Homo habilis                           

2. Neanderthal human

3. Cro-magnon humans               

4. Ramapithecus

Subtopic:  Evolution Prior to Ape Man: 1 | Evolution Prior to Ape Man |
 74%
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Parallelism is 

1. adaptive divergence

2. adaptive divergence of widely separated species

3. adaptive convergence of widely different species

4. adaptive convergence of closely related groups

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
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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. the possible origin of life by the combination of chemicals under suitable environmental conditions

Subtopic:  Examples of Chemical Evolution |
 88%
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