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Q. No.Karl Ernst von Baer:
1.
conducted a control experiment to disprove spontaneous generation
2.
proposed the concept of pangenesis as the physical basis of heredity
3.
disapproved the proposal of Ernst Haeckel [Biogenetic law]
4.
was one of the rediscoverers of Mendel’s laws
Subtopic: Embryological Evidence of Evolution |
88%
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The frequency of a recessive allele in a population at genetic equilibrium is 0.3. What is the frequency of homozygous dominant genotype in this population?
1. 0.49
2. 0.09
3. 0.21
4. 0.7
1. 0.49
2. 0.09
3. 0.21
4. 0.7
Subtopic: Hardy Weinberg Law |
65%
From NCERT
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Development of analogous structure as a result of convergent evolution is shown in all of the following examples except:
| 1. | Eye of a mammal and the eye of octopus |
| 2. | Flipper of penguin and flipper of dolphin |
| 3. | Thorn of Bougainvillea and tendril of Cucurbita |
| 4. | Sweet potato and potato |
Subtopic: Concept of Organic Evolution: Evidence |
82%
From NCERT
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For primary abiogenesis, Oparin opined that the primeval Earth atmosphere lacked:
1. Hydrogen
2. Free oxygen
3. Methane
4. Ammonia
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%
From NCERT
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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%
From NCERT
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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 |
72%
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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%
From NCERT
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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
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