Q. No.Look at the figure showing hearts in different vertebrates and select the correct statements:
| Statement I: | The hearts in different vertebrates are homologous organs. |
| Statement II: | They have developed in different groups as a result of convergent evolution between them. |
| 1. | Both Statement I and Statement II are correct and Statement II explains Statement I. |
| 2. | Statement I is correct and Statement II is incorrect. |
| 3. | Statement I is incorrect and Statement II is correct. |
| 4. | Both Statement I and Statement II are correct but Statement II does not explain Statement I. |
Subtopic: Concept of Organic Evolution: Evidence |
66%
Level 2: 60%+
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The figure shows a family tree of dinosaurs and their living modern-day counterpart organisms. Study the given two statements:
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | ‘A’ denotes ‘crocodilians’ that have a four chambered heart and endothermy similar to the birds and the mammals. |
| Statement II: | ‘B’ denotes ‘Archaeopteryx’, a connecting link between reptiles and birds and has been found as a complete specimen preserved as fossil. |
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Concept of Organic Evolution: Evidence |
Level 3: 35%-60%
Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 359139
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Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 359139
The “Biogenetic Law” was given by :
| 1. | von Baer | 2. | Ernst Haeckel |
| 3. | Hugo de Vries | 4. | Theodosius Dobzhansky |
Subtopic: Concept of Speciation | Concept of Organic Evolution: Evidence |
71%
Level 2: 60%+
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“Organisms that share common descent show underlying embryological patterns on which they build later their adult patterns”. This is :
| 1. | Haeckel’s law | 2. | Baer’s law |
| 3. | Gauss law | 4. | Allen’s rule |
Subtopic: Concept of Organic Evolution: Evidence |
Level 3: 35%-60%
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A thorn of Bougainvillea and a tendril of Cucurbita are an example of :
| 1. | analogous organs | 2. | vestigial organs |
| 3. | homologous organs | 4. | defense organs |
Subtopic: Concept of Organic Evolution: Evidence |
89%
Level 1: 80%+
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The wings of birds, the forelegs of a horse, and the upper limbs of humans are:
| 1. | analogous structures | 2. | homologous structures |
| 3. | vestigial structures | 4. | phylogenetic structures |
Subtopic: Concept of Organic Evolution: Evidence |
79%
Level 2: 60%+
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The thorn of Bougainvillea and the tendril of Cucurbita are shown in the figure: Identify the correct statement from the ones given below:
I: represent homology
II: are results of convergent evolution
I: represent homology
II: are results of convergent evolution
| 1. | Only I is correct | 2. | Only II is correct |
| 3. | Both I and II are correct | 4. | Both I and II are incorrect |
Subtopic: Concept of Organic Evolution: Evidence |
86%
Level 1: 80%+
Hints
The biological relationship of the bones in the forelimbs of mammals is an argument in favour of evolution. What will be true for the forelimbs of the different mammals shown below?
| Statement I: | They evolved in a similar environment, rather than inherited from a recent common ancestor. |
| Statement II: | They have a common descent and have evolved from a shared ancestor. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Concept of Organic Evolution: Evidence |
72%
Level 2: 60%+
Hints
Analogous organs arise due to:
| 1. | divergent evolution | 2. | artificial selection |
| 3. | genetic drift | 4. | convergent evolution |
Subtopic: Concept of Organic Evolution: Evidence |
90%
Level 1: 80%+
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The wings of an insect and the wings of a bird are examples of:
| 1. | analogous structures | 2. | homologous structures |
| 3. | vestigial structures | 4. | phylogenetic structures |
Subtopic: Concept of Organic Evolution: Evidence |
91%
Level 1: 80%+
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