Which of the following organisms alive today is likely to be most similar to the first life forms that evolved on the earth?

1. Methane producing bacteria

2. Cyanobacteria

3. Unicellular algae

4. Diatoms

 

Subtopic:  Definition & Types of Evolution |
 54%
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The similarities between the eyes of an octopus and of a mammal are a result of:

1. Convergent evolution

2. Divergent evolution

3. Saltation

4. Retrograde evolution

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 85%
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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A population of an animal is hunted down to only 20 organisms. Later the number is restored to 10,000 organisms, but the variations in this population are highly reduced. This is called:

1. Founder Effect

2. Bottleneck effect

3. Edge effect

4. Heterosis

Subtopic:  Sources of Variation: 2 | Sources of Variation |
 62%
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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 |
 63%
From NCERT
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The wings of a bird and that of an insect are:

1. Analogous structures

2. Homologous structure

3. Vestigial structures

4. Useless structures

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 90%
From NCERT
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Genetic drift occurs when a few individuals of a species colonize an island. The particular phenomenon is known as:

(1) The bottleneck effect

(2) The founder effect

(3) Assortative mating

(4) Random mating 

Subtopic:  Sources of Variation: 2 | Sources of Variation |
 83%
From NCERT
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