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Q. No.For primary abiogenesis, Oparin opined that the primeval Earth atmosphere lacked:
1. Hydrogen
2. Free oxygen
3. Methane
4. Ammonia
Subtopic: Cosmic Evolution | Origin of Life: Chemical Evolution: 1 | Origin of Life: Chemical Evolution: 2 |
93%
From NCERT
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Match each item in COLUMN I with one in Column II and select the best match from the codes given:
Choose the correct answer from the options given below:
| COLUMN I | COLUMN II | ||
| (a) | Adaptive radiation | (i) | Fast emergence of resistance in bacteria against antibiotics |
| (b) | Convergent evolution | (ii) | Bones of forelimbs in Man and Whale |
| (c) | Divergent evolution | (iii) | Wings of Butterfly and Bird |
| (d) | Evolution by anthropogenic action | (iv) | Dispersion and diversification of Australian marsupials |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (i) | (iv) | (iii) | (ii) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iii) | (ii) | (i) | (iv) |
Subtopic: Natural Selection | Concept of Organic Evolution: Evidence |
93%
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Oparin and Haldane proposed that at the time of the origin of life, the condition of the earth included all the following except:
| 1. | A highly oxidizing atmosphere |
| 2. | High temperature |
| 3. | Volcanic storms |
| 4. | Presence of methane and ammonia in the atmosphere |
Subtopic: Examples of Chemical Evolution |
86%
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The frequency of the recessive allele in a population at genetic equilibrium is 0.3. What is the frequency of heterozygotes in this population?
| 1. | 0.9 | 2. | 0.7 |
| 3. | 0.42 | 4. | 0.49 |
Subtopic: Hardy Weinberg Law |
73%
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What type of natural selection is shown in the given figure?
1. Stabilizing
2. Directional
3. Disruptive
4. Regressive
1. Stabilizing
2. Directional
3. Disruptive
4. Regressive
Subtopic: Natural Selection |
78%
From NCERT
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Identify the correctly matched pair:
| I. | Homo habilis | Brain capacity 650-800 cc; probably did not eat meat |
| II. | Homo erectus | Brain capacity about 900 cc; probably ate meat |
| III. | Neanderthal man | Brain capacity 1400 cc; buried their dead |
| 1. | Only I and II |
| 2. | Only I and III |
| 3. | Only II and III |
| 4. | I, II, and III |
Subtopic: Introduction to Human Evolution | Evolution of Homo Sapiens |
87%
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Natural selection where more individuals acquire specific character value other than the mean character value, leads to :
1. Random change
2. Stabilising change
3. Directional change
4. Disruptive change
1. Random change
2. Stabilising change
3. Directional change
4. Disruptive change
Subtopic: Natural Selection |
71%
From NCERT
NEET - 2022
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Which of the following statements is not true?
| 1. | Flippers of penguins and dolphins are a pair of homologous organs. |
| 2. | Analogous structures are a result of convergent evolution. |
| 3. | Sweet potato and potato is an example of analogy. |
| 4. | Homology indicates common ancestry. |
Subtopic: Concept of Organic Evolution: Evidence: 1 |
81%
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NEET - 2022
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Genetic Drift occurs due to :
1. Natural selection
2. Sudden population migration
3. Continuous gene migration
4. Mutation
Subtopic: Hardy Weinberg Law: 1 |
60%
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NEET - 2022
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Select the correct match regarding adaptive radiation of Australian marsupials corresponding to placental mammals
1. Numbat-Flying Squirrel
2. Tasmanian Wolf - Bobcat
3. Marsupial mouse- Mole
4. Spotted Cuscus - Lemur
Subtopic: Concept of Organic Evolution: Evidence |
66%
From NCERT
NEET - 2022
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