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

 64%
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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 |
 83%
From NCERT
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Which of the following primate is the closest relative of humans ? 

1. Rhesus monkey

2. Orangutan

3. Gorilla

4. Gibbon

Subtopic:  Classification of Primates |
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Convergent evolution is illustrated by

1. dogfish and whale

2. rat and dog

3. bacterium and protozoan

4. starfish and cuttle fish

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 58%
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Evolutionary history of an organism is known as

1. ancestry 

2. palaeontology

3. ontogeny 

4. phylogeny

Subtopic:  Palentological Evidences of Evolution |
 61%
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Genetic drift operates in 

1. small isolated population

2. large isolated population

3. fast reproductive population

4. slow reproductive population

Subtopic:  Sources of Variation: 2 | Sources of Variation |
 80%
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Which of the following pair is homologous organ?

1. Wings of birds and locust

2. Wings of birds (sparrow) and pectoral fins of fish

3. Wings of bat and butterfly

4. Legs of frog and cockroach

Subtopic:  Concept of Organic Evolution: Evidence: 1 | Concept of Organic Evolution: Evidence |
 70%
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De Vries gave his mutation theory on organic evolution while working on

1. Pisum sativum

2. Drosophila melanogaster

3. Oenothera lamarckiana

4. Althea rosea

 

Subtopic:  Hugo De Vries Theory of Evolution |
 73%
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Peripatus is a connecting link between

1. Ctenophora and Platyhelminthes

2. Mollusca and Echinodermata

3. Annelida and Arthropoda

4. Coelenterata and Porifera

Subtopic:  Concept of Organic Evolution: Evidence: 3 | Concept of Organic Evolution: Evidence |
 78%
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