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Q. No.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 |
87%
Level 1: 80%+
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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 |
74%
Level 2: 60%+
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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 |
79%
Level 2: 60%+
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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%
Level 1: 80%+
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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 |
72%
Level 2: 60%+
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 |
83%
Level 1: 80%+
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 |
63%
Level 2: 60%+
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 |
69%
Level 2: 60%+
NEET - 2022
Hints
Speciation occurs most frequently is populations that are
| 1. | Sympatric |
| 2. | Undergoing disruptive selection |
| 3. | Allopatric |
| 4. | Not geographically separated |
Subtopic: Concept of Speciation |
Level 3: 35%-60%
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| Assertion(A): | Analogous structures are a result of convergent evolution |
| Reason(R): | More than one adaptive radiation appeared to have occurred in an isolated geographical area, is the convergent evolution |
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
| 1. | Both (A) & (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) & (R) are true but (R) is not the correct explanation of (A) |
| 3. | (A) is true but (R) is false |
| 4. | Both (A) and (R) are false statements |
Subtopic: Sources of Variation |
67%
Level 2: 60%+
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