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Q. No.Panspermia theory suggests that:
1.
Life originated independently at multiple locations on Earth.
2.
Life on Earth was seeded by meteorites and comets.
3.
Life evolved from simple to complex forms solely through natural selection.
4.
Life exists only on Earth, and all life forms have a common origin.
Subtopic: Other Theories of Origin of Life | Origin of Life |
84%
From NCERT
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The key difference between Homo habilis and Homo erectus is:
| 1. | Homo habilis used tools made of stone, while Homo erectus did not use any tools. |
| 2. | Homo erectus had a cranial capacity of 900 cc, unlike Homo habilis who had a cranial capacity of about 650 to 800 cc. |
| 3. | Homo habilis was capable of language, whereas Homo erectus was not. |
| 4. | Homo erectus lived in larger social groups compared to Homo habilis. |
Subtopic: Introduction to Human Evolution | Evolution of Homo Sapiens | Evolution Prior to Ape Man |
91%
From NCERT
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Consider the following statements about fossil records:
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statements are correct.
4. Neither Statement is correct.
| I: | They provide evidence of a series of organisms highlighting evolutionary transitions. |
| II: | They show that most species that have ever lived on Earth are still alive today. |
2. Only Statement II is correct.
3. Both Statements are correct.
4. Neither Statement is correct.
Subtopic: Palentological Evidences of Evolution |
81%
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What does it mean to say that evolution is a stochastic process?
| 1. | Evolution is a predictable and deterministic process. |
| 2. | Evolution is solely driven by natural selection. |
| 3. | Evolutionary changes are due largely to random genetic mutations and chance events. |
| 4. | Evolution only occurs in predictable environments. |
Subtopic: Natural Selection |
83%
From NCERT
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Consider the given two statements:
| Assertion (A): | A change of frequency of alleles in a population would be interpreted as resulting in evolution. |
| Reason (R): | Five factors are known to affect Hardy-Weinberg equilibrium. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True and (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is False |
Subtopic: Hardy Weinberg Law | Sources of Variation |
82%
From NCERT
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Consider the two statements:
| Assertion (A): | Classification of organisms into related groups should not solely be based on the morphological features. |
| Reason (R): | Convergent evolution results in unrelated organisms resembling each other. |
| 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, (R) is False |
| 4. | (A) is False, (R) is True |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
61%
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Natural selection acts only on the traits that are:
1. Dominant
2. Recessive
3. Acquired during the lifetime of an individual
4. Inherited
1. Dominant
2. Recessive
3. Acquired during the lifetime of an individual
4. Inherited
Subtopic: Biological Evolution |
57%
From NCERT
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What, according to Lamarck, is the reason for the especially long neck seen in giraffes?
| 1. | Ancestral giraffes with longer necks got more food and left more surviving offspring. |
| 2. | Ancestral giraffes stretched their necks to get food. |
| 3. | It was a divine creation. |
| 4. | The giraffe is the mammal where the number of cervical vertebrae is much more than the number of cervical vertebrae in other mammals. |
Subtopic: Theory of Evolution & Lamarckism | Biological Evolution |
82%
From NCERT
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Consider the given two statements:
| Assertion (A): | Those who are better fit in an environment, leave more progeny than others. |
| Reason(R): | The fitness, according to Darwin, refers ultimately and only to reproductive fitness. |
| 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, (R) is False |
| 4. | (A) is False, (R) is False |
Subtopic: Darwin's Theory |
79%
From NCERT
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In evolutionary terms, variations due to mutations are:
1. random and directionless
2. random and directional
3. small and directional
4. random, small and directional
1. random and directionless
2. random and directional
3. small and directional
4. random, small and directional
Subtopic: Hugo De Vries Theory of Evolution | Mechanism of Evolution |
78%
From NCERT
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