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Q. No.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
Subtopic: Natural Selection |
71%
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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%
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NEET - 2022
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Mark the incorrect match related to human ancestor and its characteristic.
| Name | Age | Character | |
| 1. | Dryopithecus | 15 mya | They were hairy and walked like gorillas and chimpanzees |
| 2. | Australopithecus | 2 mya | They hunted with stone weapons but essentially ate fruit. |
| 3. | Homo erectus | 1.5 mya | Large brain around 900 cc, probably ate meat. |
| 4. | Neanderthal man | 100000-40,000 years back | brain size of 1400 cc lived in east African grassland. |
Subtopic: Introduction to Human Evolution |
58%
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Mark the incorrect Match
| 1. | Flippers of penguins and Dolphins | Analogous Organ |
| 2. | Koala and Bandicoot | Adaptive Radiation |
| 3. | Lemur and spotted cuscus | Convergent Evolution |
| 4. | Sweet potato and ptato | Divergent Evolution |
Subtopic: Concept of Organic Evolution: Evidence |
81%
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Speciation occurs most frequently is populations that are
1. Sympatric
2. Undergoing disruptive selection
3. Allopatric
4. Not geographically separated
1. Sympatric
2. Undergoing disruptive selection
3. Allopatric
4. Not geographically separated
Subtopic: Concept of Speciation |
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Natural selection assisted by anthropogenic action makes the process of evolation
1. Saltatory and stochastic
2. Gradual and determined
3. Saltatory and punctuated
4. Gradual and stochastic
1. Saltatory and stochastic
2. Gradual and determined
3. Saltatory and punctuated
4. Gradual and stochastic
Subtopic: Concept of Speciation |
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A: Analogous structures are a result of convergent evolution
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. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3. If Assertion is true statement but Reason is false, then mark (3)
4. If both Assertion and Reason are false statements, then mark (4)
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. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3. If Assertion is true statement but Reason is false, then mark (3)
4. If both Assertion and Reason are false statements, then mark (4)
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Subtopic: Sources of Variation |
67%
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Which of the following statement is true about genetic drift?
1. If operates in large populations
2. If always eliminates favourable allele from a population.
3. If work in opposite to natural selection
4. If can not fix non-adaptive trait in a population
1. If operates in large populations
2. If always eliminates favourable allele from a population.
3. If work in opposite to natural selection
4. If can not fix non-adaptive trait in a population
Subtopic: Concept of Speciation |
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