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 |
1. | 500 mya | 2. | 350 mya |
3. | 320 mya | 4. | 300 mya |
1. | 500 mya | 2. | 350 mya |
3. | 320 mya | 4. | 300 mya |
1. | Seymouria | 2. | Peripatus |
3. | Cartilaginous fishes | 4. | Coelocanths [lobe-finned fishes] |
1. | Therapsids | 2. | Prosimians |
3. | Platyrrhinis | 4. | Sauropsids |
1. | Carboniferous | 2. | Jurassic |
3. | Cretaceous | 4. | Tertiary |
1. | Pareiasaurus | 2. | Pelycosaur |
3. | Ichthyosaurus | 4. | Archosaurus |
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 |
1. | 15 mya | 2. | 20 mya |
3. | 25 mya | 4. | 30 mya |
1. | Homo habilis | 2. | Homo erectus |
3. | Homo ergaster | 4. | Homo neanderthelensis |