Q. No.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
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| 1. | Seymouria | 2. | Peripatus |
| 3. | Cartilaginous fishes | 4. | Coelocanths [lobe-finned fishes] |
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| 1. | Carboniferous | 2. | Jurassic |
| 3. | Cretaceous | 4. | Tertiary |
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| 1. | Pareiasaurus | 2. | Pelycosaur |
| 3. | Ichthyosaurus | 4. | Archosaurus |
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| 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 |
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| 1. | Homo habilis | 2. | Homo erectus |
| 3. | Homo ergaster | 4. | Homo neanderthelensis |
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