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Q. No.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 |
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The given figure shows the adaptive radiation of marsupials of Australia. What is correct regarding adaptive radiation?
| I: | It is the process of evolution of different species in a given geographical area starting from a point and literally radiating to other areas of geography (habitats). |
| II: | When more than one adaptive radiation appeared to have occurred in an isolated geographical area (representing different habitats), one can call this divergent evolution. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Darwin's Theory |
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Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Fishes with stout and strong fins that could move on land and go back to water existed about:
| 1. | 500 mya | 2. | 350 mya |
| 3. | 320 mya | 4. | 300 mya |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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The connecting link between the fishes and amphibians is the:
| 1. | Seymouria | 2. | Peripatus |
| 3. | Cartilaginous fishes | 4. | Coelocanths [lobe-finned fishes] |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Dinosaurs became extinct during the geological period:
| 1. | Carboniferous | 2. | Jurassic |
| 3. | Cretaceous | 4. | Tertiary |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Around 200 mya, some land reptiles went back to the water to evolve into fish-like reptiles, for example:
| 1. | Pareiasaurus | 2. | Pelycosaur |
| 3. | Ichthyosaurus | 4. | Archosaurus |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Though we cannot be certain, what can be the probable reason/s for the sudden disappearance of dinosaurs from the Earth?
| I: | Climatic changes killed them |
| II: | Most of them evolved into birds |
| 1. | I only | 2. | II only |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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The primates, Dryopithecus and Ramapithecus, existed around:
| 1. | 15 mya | 2. | 20 mya |
| 3. | 25 mya | 4. | 30 mya |
Subtopic: Evolution of Homo Sapiens | Evolution Prior to Ape Man |
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