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Q. No.

Palaeontological evidence for evolution refers to the:

1. development of the embryo 2. homologous organs
3. fossils 4. analogous organs
Subtopic:  Palentological Evidences of Evolution |
 92%
Level 1: 80%+
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Fossils are generally found in:
1. Sedimentary rocks
2. Igneous rocks
3. Metamorphic rocks
4. Any type of rock
Subtopic:  Palentological Evidences of Evolution |
 92%
Level 1: 80%+
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A study of fossils in different sedimentary layers:
I: indicates the geological period in which they existed.
II: shows that life-forms varied over time.
III: shows that certain life-forms are restricted to certain geological time-spans.

1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic:  Palentological Evidences of Evolution |
 91%
Level 1: 80%+
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Consider the given two statements: 
Assertion (A): Fossils are generally found in sedimentary rocks.
Reason (R): For fossilization, the organism must become covered by sediment soon after death, otherwise the remains are destroyed by scavengers or decomposition.
 
1. Both (A) and (R) are True but (R) does not correctly explain (A).
2. (A) is True but (R) is False.
3. Both (A) and (R) are True and (R) correctly explains (A).
4. (A) is False but (R) is True.
Subtopic:  Palentological Evidences of Evolution |
 54%
Level 3: 35%-60%
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Consider the given two statements:
Assertion (A): Geologists use radioactive dating to estimate how long ago rocks were formed, and to infer the ages of fossils contained within those rocks.
Reason (R): Radioactive atoms are trapped inside the rocks when they are formed and afterwards, they decay at a predictable rate.
 
1. (A) is False but (R) is True.
2. Both (A) and (R) are True and (R) is the correct explanation of (A).
3. Both (A) and (R) are True but (R) is not the correct explanation of (A).
4. (A) is True but (R) is False.
Subtopic:  Palentological Evidences of Evolution |
 83%
Level 1: 80%+
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Consider the given two statements:
Assertion (A): Only a small percentage of life-forms can be expected to be represented in fossil discoveries.
Reason (R): Organisms are only rarely preserved as fossils in the best of circumstances, and only a fraction of such fossils have been discovered.
 
1. Both (A) and (R) are True and (R) correctly explains (A).
2. Both (A) and (R) are True but (R) does not correctly explain (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Palentological Evidences of Evolution |
 82%
Level 1: 80%+
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Consider the given two statements:
Assertion(A): Homology implies divergent evolution.
Reason(R): Homologous organs are organs which do similar jobs in two taxa that were not present in their most recent common ancestor but rather evolved separately.
 
1. Both (A) and (R) are True and (R) correctly explains (A).
2. Both (A) and (R) are True but (R) does not correctly explain (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Palentological Evidences of Evolution |
 76%
Level 2: 60%+
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Consider the following statements:

I:  The thorns and tendrils of Bougainvillea and Cucurbita represent homology.
II:  Sweet potato and potato exhibit analogy.
III:  Homologous organs are the result of divergent evolution & analogous organs are the result of convergent evolution.

Which of the above statements are true?

1. I and II only 2. I and III only
3. II and III only 4. I, II, and III
Subtopic:  Palentological Evidences of Evolution |
 88%
Level 1: 80%+
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All the following are examples of evolution by anthropogenic action except:

1. Industrial melanism seen in peppered moth
2. Pesticide resistance in pests
3. Emergence of antibiotic resistant bacteria
4. Streamlined body in dolphins
Subtopic:  Palentological Evidences of Evolution |
 82%
Level 1: 80%+
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